WEBVTT

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welcome to the Intel fourth generation core series processor AKA code name

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Haswell overclocking guide we're going to show you how to get the most of of

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your new CPU in only a few simple steps

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let's start with the basic benefits of overclocking I actually had someone ask

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me about this the other day uh you know what is computer overclocking and I was

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trying to explain well you take the parts that you would normally buy and

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then you turn them up in speed and you can increase the voltage to make sure

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the stability stays right and basically you're getting more performance than

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what you actually paid for and this individual said to me oh so it's kind of

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like overclocking your phone and I said yes overclock clocking is overclocking

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whether it's a PC or a phone the idea is you want more performance and you don't

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necessarily want to pay anymore for the actual processor but of course I have to

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tell you guys the dangers of overclocking overclocking can result or

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will result in higher heat output more

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power consumption it can result in instability or shorter lifetime for your

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components and very very rarely it can result in outright death of components

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but as long as as you're using high quality stuff and going about it in a

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safe and responsible manner you likely won't run into this kind of trouble now

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the good news is that for CPUs in particular Intel has an overclocking

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extended warranty that you can actually buy for it and they'll replace it for you just like that even if you kill it

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during overclocking now it would be irresponsible of me also to not give you

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guys the luck of the draw disclaimer overclocking is running things outside

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of their specifications they are not guaranteed to do these things so if you

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happen to get a CPU that runs at exactly

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stock speed and only stock speed that's

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life you can't return it because it's a bad overclocker it doesn't work that way

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it overclocks or it doesn't and that's great if it does so whatever we do today

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you might get the same results as us better results than us or much worse

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results than us and that'll be just kind of luck of the draw without further

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ado let's get into it now planning out

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an overclocking capable build does take a little bit more work than just your

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average PC you can't Cobble together whatever you want and expect to get

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great overclocking performance and it starts with the CPU you're going to

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choose either an extreme edition if you're on the very high end or a K

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series processor because those are the ones that have what are called unlocked

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multipliers allowing you to turn the CPU frequency up and down at will and test

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them and actually run them at those speeds now we're using a 4770k this is a

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Haswell fourth generation CPU and you

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can expect somewhere in the range of 4.4 to 4.5 GHz for most 4770 K and then if

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you're lucky and you're in the top 30% you might get around 4.6 in the top 20%

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you might get around 4.7 GHz and in the top 10% of CPUs you will be able to get

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4.8 GHz or more if you also build a

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system around it that is capable of taking advantage of that

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now that bit I mentioned before about how it'll increase the thermal output

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you need better cooling to get the most out of an overclock so in our case we're

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going to be using an Corsair h100i this

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is a dual 120 mm radiator liquid cooling

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system however it should be noted that you can still get very good overclocking

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out of something like a dual Tower heat sink such as this thermal right Silver

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Arrow extreme or something like a no TOA NHD 14 for our motherboard we've gone

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with the Maximus 6 Extreme from ASUS and as the name suggests this is a bit of an

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extreme option and you don't really need that for a mainstream overclock pretty

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much any ASUS Z87 board has the same

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digital power delivery as well as ufi BIOS optimizations that up to

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multipliers such as 48 or 4.8 GHz they

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are pretty much all going to be able to achieve those results now the key

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difference with high-end boards such as the deluxe WS series tough series or Rog

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series is going to be in things like the overall build quality the extras that

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are included things like the OC panel that I have in front of me as well as

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their beefy vrm Solutions both in terms

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of the design and the cooling that allow them to stay stable at even much higher

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frequencies than your typical motherboard particularly with the Rog

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series you also get a degree of tweaking and tinkering that is not available with

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other motherboards for our memory we've gone with Corsair Dominator platinums

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these are 2400 MHz modules they're 8 gig

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dims meaning we've got 32 gigs of RAM in this system but this was mostly for

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stress testing it should be noted that while most Haswell CPUs are capable of

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running at 2.8 GHz to 3 GHz on the

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memory remember the integrated memory controller affects

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this it tends to be reduced a lot as you

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increase the CPU speed so once you get up to around 4.6 GHz 1600 MHz is pretty

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much a guarantee with anything above that being gravy and most of them can't

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do more than around 2133 MHz on RAM once

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you ramp up the CPU clock speed this becomes especially true with high

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density kits and when you populate all the dims in your motherboard so we use

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this kit mostly to push the platform to its absolute limit and because Dominator

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platinums are so sexy a good quality

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power supply such as the ax 1 1200i although calling it good quality is a

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bit of an understatement allows the power that's delivered to your system to

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be cleaner and more consistent meaning it will can be more stable in addition

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to being able to power more components such if you wanted to add more graphics

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cards or whatever else later this particular one is also extremely

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efficient rated at 80 plus platinum and is validated for the lower sea states

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that has well as capable of going into C

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states allow you to save power but they require your power supply to be stable

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not only at very high wattages but also incredibly low wattages so make sure

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that your power supply whether you're overclocking or not for a Haswell system

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is validated for C6 and C7 States now

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the rest of these components don't really affect overclocking performance

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directly but our Intel 335 series SSD enables us to boot up more quickly after

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failed overclocking attempts our Noctua 120 MIM fans allow us to have the

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radiator still perform very well but also not be loud and our GTX 780 is a

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great match for a 4770k once it's overclocked allowing us to have beastly

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system performance now it should also be noted that VGA Hotwire is a feature

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supported by certain ASUS motherboards and graphics cards that allows you to

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directly overvolt your graphics card using the motherboard so check that out

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if you're looking for a great motherboard graphics card pairing as

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well and here we go step one of overclocking is to not overclock I

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recommend updating your mother board to the latest BIOS setting those settings

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all to default make sure all your fans

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are spinning make sure your CPU is stable run the Ida 64 built-in CPU

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testing tool as well as a couple passes of mest 86 Plus at bone stock settings

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because if you have problems before you even start overclocking you're going to

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have a bad time as soon as you do start overclocking next up is your software

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tool kit so you'll need some kind of application for monitoring the status of

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your CPU such as CPU Z or in this case we're using the built-in one in ID to 64

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you will need something for stress testing and normally we were using prime

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95 in the past but what prime 95 does do

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well is it tests maximum heat output of the CPU and there are similar tools such

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as Linux or Intel burn test but what the Ida 64 system stability test does well

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is it allows the CPU to not only run

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really hot but it also tests other components such as the new instruction

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sets that are built into Haswell giving us a more complete picture of the

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overall system stability last but not least we're going to need some kind of

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temperature monitoring program typically in the past I've used real temp GT but

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what you might notice about Haswell is that the CPU temperatures under load are

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going to be very bouncy they're going to move around a lot it's going to give you Peaks but not necessarily an average so

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ASUS has actually built a thermal probe into their motherboards themselves now

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that you can read using AI Suite or in our case we're using the OC panel right

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here to read it that'll give you a more realistic view of how the CPU is running

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under load I always recommend keeping

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some other device next to you while you're overclocking such as a notebook

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or a tablet so that you can look things up and reference them while you're

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working not every board has downloadable profiles like the Rog series boards and

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it can be a godsend if you can go on a forum such as Linus tips.com find other

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people who have similar Hardware configurations who are able to help help

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you and if you can do that at the same time as working on the machine then so

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much the better the last thing you need before you get started is this set aside

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some time for the overclock budget yourself some time where you assume that

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your system is not going to be fully functional because a rushed sloppy

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overclock is a bad overclock that can cause instability crashes or even

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operating system corruption you don't want to rush it because at the end of

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the day if your system crashes and takes with it a bunch of your work or whatever

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else it could cost you more time and headache and frustration than if You'

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just done it right in the first place

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now I know this makes me a little old school because there are lots of software utilities that allow you to do

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this kind of stuff within Windows and the extreme motherboard we have here has

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the OC panel that allows you to change most of these parameters but not

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everyone's going to be working with that so I'm mashing delete or F2 or some

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motherboards have different buttons to get into the UEFI or bio that allows us

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to change all the settings that we need to change the first setting we'll be

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having a look at is the CPU core ratio also known as the CPU multiplier it's

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called that because you've got your base clock which is 100 MHz by default and a

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multiplier that gives you your final CPU clock speed so if you had a setting of

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44 you'd be at 4,400 MHz or 4.4 GHz and

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at a setting of 48 you'd be at 4800 MHz or 4.8 GHz now there's 's more to it

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than just that and you've got a couple of different options so you press enter

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to go into those options and you've got Auto which is your stock speed including

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Intel's turbo boost technology which allows you to go to higher speeds when

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fewer cores are under load your next setting is sync all cores this allows

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you to change that multiplier and it'll change all the cores at the same time

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and lock them there so they'll all move together regardless of what kind of load

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is on the CPU finally you've got the per core option this allows you to BU build

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kind of like your own turbo boost technology but an overclocked one so you

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could set a multiplier of maybe 50x when

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you're only using one core or 48 when you're using two cores or whatever the

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case may be you can play around with it a fair bit the next setting we need is

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one of the most important one so we're going to scroll down down down down down

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in extreme tweaker here and we're going to get to CPU voltage now we can turn up

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the frequency all you want but at the end of the day if you don't increase the

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voltage you're not going to increase your stability and the amount of power

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you can deliver to the CPU and you're not going to be stable it's not going to

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work so CPU voltage allows us to compensate for the increases in

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frequency and make the system stable the problem is that the More Voltage you add

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to your CPU the more heat output will come out of your CPU so you need to add

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more Cooling and it will also decrease

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the overall lifespan of your CPU going past a certain point now there are

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actually a number of different ways that you can change CP voltage on this

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platform so you can see we're in full manual mode right now but I'm going to

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change that so now I've got Auto which is self-explanatory manual mode which

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allows me to key in a voltage and have it stay there the advantage of this is

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that random applications like stress tests can ask for too much voltage and

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overpower my cooling solution more on that a little bit later and the

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disadvantage is that when the CPUs in a low power state idling at the desktop I

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can't take advantage of any of the power savings that Haswell brings to me

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next up we've got offset mode so this allows me to take my stock CPU voltage

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remember that voltage bounces around a lot depending what's going on to give

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you that balance between power and power savings offset voltage takes whatever

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your stock ones are and bumps them up a noge so this gives you the power you

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need when you're running at an overclocked setting but it doesn't scale

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all the way back down when you're idling and not doing anything that's where

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adaptive comes in so adaptive is the one I'd recommend using as your daily driver

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setting when you're not actually tuning in an overclock because what adaptive

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does is it gives you the power you need at full load and scales all the way back

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down to stock default voltages when you're not really doing anything the

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only drawback of adaptive is that certain stress tests such as Prime 95

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can actually override your maximum adaptive voltage that you set and draw

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too much power like if you set a voltage of 1.25 for your CPU that that

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application could cause up to 1.37 volts to be drawn through your CPU causing

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instability or overwhelming your cooling so guys manual mode for dialing in the

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overclock then when you're completely done switch over to Adaptive to get that

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power savings benefit now on some older platforms it was really recommended to

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disable a lot of the power management features such as Intel's lower C States

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as well as things like speed step that turns the frequency of the CPU down when

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it's not really doing anything on Haswell that hasn't really been found to

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affect overclocking in any way so it's great because you get to leave all that

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stuff enabled while enjoying better performance under load our next setting

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is Dam's frequency 1 two 3 four five six

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seven eight yes in there now if we were

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going to leave our CPU at default and just set our RAM to 2.4 GHz we could do

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that but I recommend like I said before finding your CPU overclock before trying

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to turn your RAM up so we're going to dial our RAM into 1600 mahz and leave it

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there until we're done testing the CPU for our next trick RAM voltage now RAM

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voltage is helpful when overclocking RAM in much the same way that you add more

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CPU voltage to overclock your CPU most kits these days with the exception of

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low power ones run at around 1.65 volts

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but if you're ever not sure look at the side of your memory to find out and I

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really don't recommend changing it much

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beyond that stock voltage because honestly increasing RAM speeds doesn't

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affect many applications that much things like games don't get much benefit

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from additional RAM speed on the Haswell platform however there are exceptions to

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these rules such as if you run a lot of virtual machines you'll get a big

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benefit out of additional RAM speed and you might want to spend more time with

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that RAM frequency and that RAM voltage setting pair speaking of virtual

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machines there have been previous platforms where it was recommended to

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turn off things like virtualization or execute disabl bit not so we go into CPU

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configuration where you can see all these settings with Haswell because it

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doesn't seem to be affecting overclocking at all which is great because it means you can have all these

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features enabled and get more performance changing memory sub timings

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can have an effect on overall system stability as well as helping attain

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higher RAM overclocks but honestly that's a little bit outside the scope of

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this guide one setting in here that you might find really useful though is this

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fast boot setting right here disabling fast boot can improve memory

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compatibility by giving the computer more time to detect and diagnose any

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kinds of issues as it's booting up but it will slow down your boot time now

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ASUS has this setting on some auto rules in fact a lot of this stuff is on auto

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rules so you shouldn't need to touch most of it but the CPU cache ratio is

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something that once you've dialed in an overclock and it's stable you might want

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to try turning up because by default as you increase the CPU the CPU cachee

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ratio might lag a little bit behind and for Optimal Performance you want them to

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be one to one so you might actually go in and turn this up or turn it down to

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get it as close to your CPU frequency as possible keeping it 200 to 300 MHz below

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your CPU frequency however can improve stability getting near the end here guys

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now within the overclocking tuner manual

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mode you can see we unlock a few extra settings here CPU strap allows you to

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manually set the strap that the base clock runs at so changing this to for

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example 125 would allow your CPU's base

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clock to become 125 while leaving all the other devices that rely on the base

00:17:41.799 --> 00:17:50.160
clock such as the PCI Express frequency to stay at their nominal values this

00:17:47.480 --> 00:17:55.120
allows you to make changes to base clock which mostly you don't really need to do

00:17:53.679 --> 00:17:59.960
the only time I'd really recommend changing base clock would be to leave

00:17:56.960 --> 00:18:01.880
this guy at 100 and and then make slight

00:17:59.960 --> 00:18:07.960
changes to the base clock frequency like maybe on the order of of. 3 or 0.5 when

00:18:05.840 --> 00:18:12.880
you're at a setting where you kind of look at your overclock and you go oh I'm

00:18:09.880 --> 00:18:15.280
almost stable here maybe I want to turn

00:18:12.880 --> 00:18:21.280
it down a little bit under 100 so that I can get instead of 4.4 GHz or 4.5 GHz I

00:18:19.080 --> 00:18:26.120
can run at 4.43 gahz to see if I can get that

00:18:24.080 --> 00:18:29.400
little bit of extra frequency that's how I'd really recommend using these

00:18:27.480 --> 00:18:32.960
settings because other than that you don't really need them the last things

00:18:31.120 --> 00:18:38.280
I'm going to show you guys are the CPU analog and digital IO voltages so these

00:18:35.480 --> 00:18:44.440
are these guys right here now these can improve stability but the challenge is

00:18:42.200 --> 00:18:48.600
that they doesn't it doesn't necessarily mean you increase them to get more

00:18:46.039 --> 00:18:51.520
stability it's a matter of fine-tuning so if you're looking for that extra

00:18:50.080 --> 00:18:54.840
little bit you might try turning them a little bit up or a little bit down to

00:18:53.400 --> 00:19:00.520
see if you can squeeze a few more megahertz out of your CPU now on to the

00:18:57.559 --> 00:19:05.200
black magic of overclocking itself I always recommend a quick and dirty

00:19:03.000 --> 00:19:09.120
overclock to give you some idea of what you're working with before you start to

00:19:06.919 --> 00:19:14.280
dial things down so for Haswell I'd recommend a multiplier of 46 on all

00:19:12.120 --> 00:19:18.880
cores so we're going to go ahead and change that value there press enter to

00:19:16.320 --> 00:19:25.120
dial it in and I would recommend a CPU voltage of 1.2

00:19:22.200 --> 00:19:29.480
volts press F10 to save the settings press enter and this will give you some

00:19:26.880 --> 00:19:33.280
idea so if it boots up and runs all the benchmarks you need it to and all the

00:19:31.200 --> 00:19:39.600
stability tests then you got a pretty good CPU congratulations if it boots up

00:19:37.120 --> 00:19:42.760
and doesn't run the stability tests then you've probably got something in the

00:19:40.799 --> 00:19:46.440
middle of the road and if it doesn't post at all doesn't get into the

00:19:44.360 --> 00:19:50.640
operating system doesn't do anything then that's unfortunate you've probably

00:19:48.400 --> 00:19:55.880
got a below average overclocker so this is great our CPU is

00:19:53.640 --> 00:20:02.440
running our stability tests no problems at 4.6 that gives us two options now

00:19:59.280 --> 00:20:04.440
number one is we can be happy with 4.6

00:20:02.440 --> 00:20:09.039
GHz and we can try turning the voltage down to get better power consumption and

00:20:06.840 --> 00:20:12.799
less heat output this will make the CPU last for longer even though we're

00:20:10.520 --> 00:20:17.679
running a pretty significant overclock option number two is keep pushing so

00:20:15.640 --> 00:20:23.120
increase the multiplier and see if she runs at 4.7 GHz with 1.2 volts although

00:20:21.080 --> 00:20:27.640
that would mean we'd have a pretty awesome overclocking chip now don't

00:20:25.840 --> 00:20:30.880
worry if your system isn't stable at these settings there are other things

00:20:29.080 --> 00:20:36.320
you can try you can see we're well within our thermal threshold our Target

00:20:32.880 --> 00:20:39.480
of about 85° that keeps us below where

00:20:36.320 --> 00:20:41.720
the CPU will throttle but is you know

00:20:39.480 --> 00:20:44.679
warm enough that you we're not super thrilled with it good thing we're only

00:20:43.360 --> 00:20:51.720
going to be running synthetics for a little while remember real world applications won't have the same heat

00:20:49.159 --> 00:20:56.400
effect on the CPU as these synthetic benchmarks do so if it doesn't run you

00:20:54.120 --> 00:21:01.880
can try increasing your voltage in steps until it becomes stable check that out

00:20:58.840 --> 00:21:04.360
we're stable at 4.7 GHz that means our

00:21:01.880 --> 00:21:08.960
CPU is probably somewhere in the top 20% of Haswell 4770k and we're feeling

00:21:07.280 --> 00:21:13.840
pretty good about ourselves now we can keep pushing but we know already having

00:21:11.600 --> 00:21:18.039
tried this before we started filming that we're not going to get 4.8 GHz

00:21:15.960 --> 00:21:23.080
without pushing the voltage up further and we're already sitting at about 80°

00:21:20.480 --> 00:21:26.840
underload on the CPU so that's the comfort zone we set for ourselves if we

00:21:25.039 --> 00:21:30.880
got more exotic cooling maybe we could go a little bit further but we're

00:21:28.480 --> 00:21:35.840
probably gonna stay there what we can do is we can try to optimize our settings

00:21:33.960 --> 00:21:40.480
at this particular speed or push for a little bit more but not quite 4.8 GHz

00:21:38.880 --> 00:21:44.320
now there are a few more things to do now that you're pretty much finished

00:21:42.159 --> 00:21:48.640
number one is turn up your RAM frequency to the rated speed of your memory or go

00:21:46.679 --> 00:21:55.039
up in increments until you reach a point where it's not stable anymore we were

00:21:50.720 --> 00:21:58.159
able to achieve 1866 even at 4.7 gahz

00:21:55.039 --> 00:22:00.279
number two is turn up your cache ratio

00:21:58.159 --> 00:22:04.000
so what ASUS will automatically do is turn it down a little bit as you reach

00:22:01.880 --> 00:22:07.840
those higher overclocks try bringing it up to one to one you can eek out a

00:22:05.640 --> 00:22:11.000
little bit more performance that way and last but not least now that you've got

00:22:09.720 --> 00:22:15.159
everything dialed in you're going to want to change to that adaptive vcore

00:22:13.520 --> 00:22:20.120
setting which is going to give you that best balance between performance and

00:22:17.600 --> 00:22:23.960
power consumption so you're pretty happy with the overclock you've got there's

00:22:21.520 --> 00:22:29.000
still a few more things you can do number one is try playing around with

00:22:26.320 --> 00:22:35.240
per core overclocking so while with all four cores running at 4.7 GHz this is

00:22:32.640 --> 00:22:41.400
the best we can do what if it'll do one core at 4.8 or 4.9 or even 5 GHz you can

00:22:39.200 --> 00:22:45.600
try tuning some of those ones a little bit further to see how they go next you

00:22:43.559 --> 00:22:50.200
can try increasing the frequency of your memory so go up to the rated speed of

00:22:47.640 --> 00:22:54.400
your memory and or or maybe not the rated speed of your memory go up one at

00:22:52.000 --> 00:22:58.120
a time until it gets unstable and then back it back off and that's pretty much

00:22:56.080 --> 00:23:04.320
where you're good to go we got 1866 6 MHz on our platform even at 4.7 GHz next

00:23:02.039 --> 00:23:09.279
you can try turning up your cache ratio to be equal to your CPU multiplier this

00:23:07.640 --> 00:23:13.400
will achieve a little bit better performance but not that much the only

00:23:11.919 --> 00:23:17.440
thing the only reason we're doing this is we're compensating for ASUS's

00:23:15.200 --> 00:23:21.520
automatic rules that turn it down a little bit when you get to higher CPU

00:23:19.840 --> 00:23:25.480
frequencies in order to improve stability it is optimal to have them

00:23:23.440 --> 00:23:29.400
running one to one and the last thing you do once you have everything dialed

00:23:27.320 --> 00:23:35.600
in and you've run your very last stability test is change that voltage

00:23:32.440 --> 00:23:37.080
setting from manual to Adaptive mode

00:23:35.600 --> 00:23:41.880
that way you get the benefit of the performance and the benefit we ran a few

00:23:39.600 --> 00:23:47.039
different games and didn't see huge differences going from our stock

00:23:44.120 --> 00:23:53.400
performance CPU to our overclocked CPU at 4.7 GHz however we saw massive

00:23:51.320 --> 00:23:58.440
differences in our benchmarks that really made use of all of the cores of

00:23:55.520 --> 00:24:02.919
our CPU so the examples were cinebench and szip where our overclocked CPU

00:24:00.960 --> 00:24:09.320
performed up to 20 to 25% better than our stock CPU giving you

00:24:06.559 --> 00:24:14.880
some idea of what kind of tangible gains can be had in the right applications

00:24:12.360 --> 00:24:20.320
with overclocking now if all of that looked like way too much work ASUS has

00:24:17.919 --> 00:24:27.600
easy profiles in the BIOS where you can just go CPU level up 4.2 4.4 or 4.6 GHz

00:24:25.200 --> 00:24:32.640
and make it that simple on yourself and with within AI Suite there is an autot

00:24:30.000 --> 00:24:37.480
tuner that will not just set a static profile but will actually run through

00:24:34.960 --> 00:24:41.640
tests with your computer and determine good settings for your individual

00:24:39.520 --> 00:24:46.840
components and that one takes anywhere from around half an hour to an hour to

00:24:43.600 --> 00:24:49.200
run depending on how long it needs to

00:24:46.840 --> 00:24:53.120
find that optimal spot so thank you so much for checking out our overclocking

00:24:51.000 --> 00:24:58.159
guide on Intel's fourth generation core series Haswell CPUs on the Z87 platform

00:24:56.919 --> 00:25:02.070
don't forget to subscribe subcribe to lus Tech tips for more unboxings reviews

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