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this is the fastest gaming CPU on the planet

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or at least it was when AMD first announced

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it Intel beats him to the punch with what they claim is the fastest gaming

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CPU the core i9 12900 ks

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they put that together so quickly we didn't get a chance to review it before

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they shoved it out the door what is it about this unassuming little

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square the ryzen 7 5800 x 3d that's got

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Intel so scared that they'd drop everything to come out ahead of it

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i'll tell you but first i'm going to drop this message from our sponsor

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AMD's new gaming CPU achieves its

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fastest ever gaming claims by using their shiny new 3d v cache technology

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where ultra fast cache memory is stacked on top of the CPU die in addition to the

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cache that's already inside it but why is cache so important for gaming

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that AMD would go out of their way to literally make a cash sandwich

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because it's so close to the CPU cores it is fast you can think of it roughly

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like the relationship between RAM and storage and there are different levels

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of cache that get even faster the closer they get to the course

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3dv cache is l3 cache which for the

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5800x3d is a shared pool of cache memory for all of its 8 cores

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for games this cache is used for well everything but especially for

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things like ai behavior trees physics information and other things that the

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CPU is constantly doing if the cache fills up and this stuff has

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to be evicted back to RAM the CPU not only has to wait for new data to arrive

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from RAM but it also has to wait for the old data to come back when it's needed

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again this is what you'd call a bottleneck and

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this one will lower frame rates of CPU-bound games or cause hitching even

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when FPS is high with three times the cache of its

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namesake the ryzen 7 5800x the 5800x3d

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promises to basically never run out of cash under normal circumstances which

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should improve gaming performance to test that we've got a range of cpus

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from both team red and team blue including the brand new 12900 ks

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and we've equipped our Intel bench with the fastest memory we had available to

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give it the best chance to rain on AMD's parade we'll have all this linked down

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below right away 3d v cache makes itself known

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in f1 2021 where it beats out the core i9 12900k and matches the brand new

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12900 ks and this continues to a lesser extent with forza horizon 4 where the

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5800x3d slips a little bit but nothing too major

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far cry 6 brings the first maybe one percent low frame rates and averages

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look good but five percent lows are significantly lower as they are with the

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standard 5800x AMD is at a disadvantage

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here hitman 3 shows more of this pattern albeit with better news for AMD in

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general as average frame rates are higher than even the 12900 ks

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at the cost of frame stability microsoft flight simulator brings the first

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flawless victory over the entire field where it seems the extra cash really

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helps with maintaining not only high but stable frame rates in this very

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CPU-bound title cs go also famously CPU bound but with

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an older and more simplistic engine tips the scales back towards Intel with the

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1200 ks taking a commanding to almost 20 percent lead in average FPS

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oh and you're not getting better turn times in civilization 6 fyi

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but i don't think that's quite what they were talking about when they called it

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the world's fastest gaming CPU you're also not getting better turn

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times with our recently restocked when hoodies from ltdstore.com

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but at least you'll look good while you wait tallying it all up the 5800x3d pulls

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about a 7 lead over the 12 900k which would have made it the fastest

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gaming CPU if only the 12900 ks didn't

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exist a fact certainly not lost on Intel

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the 12 900 ks is about three percent faster across our benchmarks but it's

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worth remembering that that CPU costs 800

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more on that later AMD hasn't really marketed the 5800x3d

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for productivity and the slower clock speeds are probably going to hurt it

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more here then the extra cash will help sure enough we see about a 5 performance

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drop across the board in cinebench r23 over the og 5800 x

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and blender doesn't fear much better in bmw

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surprisingly 3db cache appears to help with the more complex gooseberry render

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likely thanks to being able to keep more asset data close to the cores

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creative cloud shows a similar performance uplift with premiere picking

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up a good five percent lead over the 5800x

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finally spec view perf shows a similar give and take depending on the test with

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life sciences and general operations seeing a performance boost

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and energy and financial services taking a hit

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looking at all our tests it works out to roughly equal performance to the non 3d

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5800x at the end of the day so you'd have to pay attention to the

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specific benchmarks to know if it's better for a given workload

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Intel meanwhile is firmly on top and it's it's not even close

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even the core i7 12700k is way out ahead

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that means that unless you're in the market for a top end CPU the 12700k

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represents a better value for productivity overall than either of those ryzen 7 chips

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for thermal testing i decided to give these chips a workout using prime95 to

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see just how hot they'll get and the 5800x3d pleasantly surprises in this

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torture test with a consistent 90 degrees using our Noctua nhd15s

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that's just a few degrees more than the standard 5800x puts out and

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significantly lower than either core i9 what's more it maintained 4.1 gigahertz

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all core throughout most of the run with power consumption below the og 5800 x

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even though both cpus are rated for 105 watt TDP

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precision boost doesn't seem to be pushing the x3d quite as hard why the

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hotter cores then well you've got the 3d v cache sitting between the cores and

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the ihs so it's less thermally efficient which brings up the other reason the

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ryzen 7 5800 x 3d is special

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overclocking or rather lack thereof for the first

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time on the ryzen platform AMD says that this is a limitation for

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this one specific CPU because the 3d

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stacked cache memory needs a hard capped maximum voltage for reliability not only

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does that mean that overclocking one of these things would potentially be

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dangerous it also means that thanks to the extra power draw required to run the

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3db cache core clocks are lower than the vanilla 5800x as we saw

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obviously that hasn't hurt it much in practice but you can imagine how much

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faster things could be if only that limitation worked in place and they can

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drive the clocks just that little bit faster

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overall it's a weird chip but it's not a bad one

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is it the most powerful gaming CPU in the world no it's beaten out by the core i9

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12900ks but again that CPU is a power hungry

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beast that costs 800. the ryzen 7 5800 x3d is 450

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which makes it the fastest gaming CPU at a price that makes any sense

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and that's why the core i7 12 700 k at 400 is in our test lineup

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that chip still represents an extremely good value it's not far off for gaming

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and dominates for the price if you need productivity plus it's running on a

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brand new platform speaking of platforms get subscribed because we've got a brand

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new storage platform with a petabyte of flash and we're totally gonna benchmark

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it but the 5800x3d is a fitting send off to

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a platform that's been around since i started writing for Linus tech tips by

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all accounts this is probably the last CPU that am4 is going to see so

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i wouldn't recommend it for new builds the platform's a dead end

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but if you're primarily a gamer who got into AMD's ecosystem early and you've

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been waiting for a chip to upgrade to then this is a solid choice for top tier

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performance that won't require you to take a second job it doesn't need fancy cooling or a big

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power supply or even new RAM could you get similar performance by

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overclocking a plane ryzen 75800x or even the new 300 5700x probably yeah

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but if you don't want to deal with that or if you're a small form factor

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enthusiast then for you 5800x3d has few downsides

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and neither does our sponsor zoho crm

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video description thanks for watching guys go check out our most recent

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sleeper where we had to go to some extreme lengths to make a

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core i9 12900k work the 5800x3d here would have been a much

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better fit literally