WEBVTT

00:00:00.040 --> 00:00:08.000
here we have the new M1 MacBook Air and this is the new Macbook Pro externally

00:00:05.240 --> 00:00:13.440
they differ very little brighter screen here a fan there but under the hood

00:00:10.759 --> 00:00:19.439
these two machines have exactly the same processor with just one catch because

00:00:16.520 --> 00:00:23.760
there's no fan in the MacBook Air its only way of cooling is passively

00:00:21.320 --> 00:00:28.679
radiating heat away and once the cooler has soaked up all the heat it can handle

00:00:26.240 --> 00:00:34.160
it's got to slow down the processor to keep itself safe but never fear because

00:00:31.439 --> 00:00:41.399
for about $30 I'm going to show you how to make this perform just like this or

00:00:38.600 --> 00:00:41.399
maybe even

00:00:47.840 --> 00:00:54.520
better by forcing air across the heat sink inside the MacBook Pro is able to

00:00:52.320 --> 00:00:59.600
maintain its performance better because it's actively removing heat from the

00:00:56.920 --> 00:01:03.239
system enclosure the MacBook Air on the other hand and as counterintuitive as

00:01:01.840 --> 00:01:08.960
that might sound it's got air right in the name has no air flow and uses a

00:01:05.960 --> 00:01:11.280
completely passive cooling solution so

00:01:08.960 --> 00:01:16.720
in Le of a fan Apple's Engineers opted to use a large heat sink inside which is

00:01:14.520 --> 00:01:21.439
essentially using the thermal mass of a block of metal to soak up the heat and

00:01:19.360 --> 00:01:25.960
then passively radiate it away through air channels below the screen and for

00:01:23.600 --> 00:01:31.520
short bursty workloads this isn't a problem that thermal mass is able to

00:01:28.040 --> 00:01:33.399
contain the short spike in heat output

00:01:31.520 --> 00:01:39.360
unfortunately when it comes to longer workloads the heat sink well heats up

00:01:36.759 --> 00:01:43.520
essentially filling up its thermal tank until it's at equilibrium with the CPU

00:01:41.479 --> 00:01:48.680
with no way to further remove heat the air will reduce its clock speeds and

00:01:45.880 --> 00:01:53.000
slow itself down so that the heat input matches the heat output and we can see

00:01:51.560 --> 00:01:57.200
this when we Benchmark these two machines side by side if the Benchmark

00:01:55.119 --> 00:02:02.039
is relatively short meaning that it doesn't heat soak the cooler both

00:01:59.880 --> 00:02:05.600
machines perform nearly identically coming within margin of error in terms

00:02:03.640 --> 00:02:09.280
of performance but when we get to more extended workloads the performance Gap

00:02:07.600 --> 00:02:14.319
widens significantly let's take a look at how

00:02:11.080 --> 00:02:16.599
it works here is the CPU and this over

00:02:14.319 --> 00:02:21.280
here is the heat sink all the heat the CPU generates is transferred into this

00:02:18.640 --> 00:02:28.319
heat sink and then the only place it can go is radiating around inside the

00:02:24.200 --> 00:02:32.120
chassis except for one exception it can

00:02:28.319 --> 00:02:34.400
actually waft this Gap at the back of

00:02:32.120 --> 00:02:39.159
the machine right here but that ain't much so it stands to reason that if we

00:02:36.760 --> 00:02:44.000
can improve the ability of the heat sink to get that heat out of the system we

00:02:41.720 --> 00:02:48.800
could improve the performance of the CPU but besides the low hanging fruit of

00:02:46.040 --> 00:02:53.319
like slapping a water block on it with like tubes and a radiator hanging off of

00:02:50.720 --> 00:02:58.599
it and calling it a day what can we do if we don't want to make permanent

00:02:55.400 --> 00:03:01.480
unwieldy modifications well that I'm

00:02:58.599 --> 00:03:06.319
glad you asked is where these come in these are thermal pads and they're

00:03:03.360 --> 00:03:10.720
designed to move heat around this this one is really squishy that is a fat

00:03:08.519 --> 00:03:14.560
thermal pad anyway all we have to do is slap these bad boys between the heat

00:03:12.560 --> 00:03:18.560
sink and the bottom of the chassis and we'll turn the back panel which

00:03:16.599 --> 00:03:24.840
conveniently is made of aluminum which happens to be great for dissipating heat

00:03:20.840 --> 00:03:27.360
into one big heat sink as it turns out

00:03:24.840 --> 00:03:35.519
all we need to do to make room for it is take off this insulating sponge right

00:03:30.480 --> 00:03:37.640
here see you later easy peasy but how

00:03:35.519 --> 00:03:43.519
does it perform well we already ran the benchmarks and the improvements are

00:03:40.280 --> 00:03:46.239
nothing short of amazing in bursty loads

00:03:43.519 --> 00:03:51.920
we saw essentially the same scores within our margin of error but on

00:03:49.080 --> 00:03:57.400
moderate to Long benchmarks we got a remarkable result up to an 8%

00:03:54.920 --> 00:04:02.799
Improvement even more impressive is that on the standard length multi-course C

00:03:59.280 --> 00:04:05.680
bench we actually beat the MacBook Pro

00:04:02.799 --> 00:04:10.200
by nearly 100 points our Theory here is that the delay between the load being

00:04:07.879 --> 00:04:14.840
applied and the fans ramping up on the MacBook Pro actually leaves a gap in its

00:04:12.840 --> 00:04:19.880
performance that the air is able to take advantage of with its beefier heat sink

00:04:18.079 --> 00:04:24.320
which is the entire chassis of the device there's essentially no delay it

00:04:22.040 --> 00:04:30.800
just immediately shunts the heat out of the case hence the win but that win

00:04:26.720 --> 00:04:32.560
comes at a cost a dire cost Comfort

00:04:30.800 --> 00:04:40.400
because the bottom of our MacBook Air Saw temperatures Rise by 7 1/ 12° to 47°

00:04:37.880 --> 00:04:44.160
C now if you're an old fogy like me you might actually remember a story

00:04:41.880 --> 00:04:49.560
circulating back in the early 2000s about a researcher who managed to burn

00:04:46.160 --> 00:04:52.440
his uh how do you say delicate bits by

00:04:49.560 --> 00:04:56.120
means of a scalding hot laptop well I'm sorry to say the story is probably bogus

00:04:54.639 --> 00:05:01.000
because we couldn't find any actual first party reporting on it but

00:04:57.960 --> 00:05:02.280
nevertheless that is initely a danger so

00:05:01.000 --> 00:05:06.720
there's got to be some kind of Regulation around that right well yeah

00:05:05.000 --> 00:05:10.720
lots of them in fact but the most important is the international

00:05:08.400 --> 00:05:16.880
electrotechnical commission standards the safety standard for information

00:05:12.400 --> 00:05:18.720
technology equipment AKA laptops is this

00:05:16.880 --> 00:05:23.840
and it specifies the requirements for products to remain safe during both

00:05:20.520 --> 00:05:26.840
normal operation and abnormal operation

00:05:23.840 --> 00:05:29.720
the specs are pretty exhaustive so to

00:05:26.840 --> 00:05:36.800
keep it simple the limit for metal unco or anodized for normal use contact is

00:05:32.639 --> 00:05:38.840
55° C at an ambient temperature of 35°

00:05:36.800 --> 00:05:42.039
to get this temperature without using a heated chamber we can calculate it by

00:05:40.680 --> 00:05:49.280
taking the macbook's external temperature subtracting the room temperature then adding 35 so let's do

00:05:46.680 --> 00:05:55.360
the math our office sits at a ball KN 20° so for our stock macbook's Peak temp

00:05:52.600 --> 00:06:03.600
of 392 we subtract 20 for the room plus 35 bringing us to 54 1/ 12° that is half

00:05:59.240 --> 00:06:05.560
a DE below the IEC limit and this right

00:06:03.600 --> 00:06:11.000
here is exactly the trade-off that Apple's Engineers needed to make for the

00:06:07.919 --> 00:06:13.639
MacBook Air to operate fanless hats off

00:06:11.000 --> 00:06:18.280
by the way guys for hitting that Mark exactly doing the same math for our

00:06:15.919 --> 00:06:23.400
modified version means that we would be 7° over that threshold and that might

00:06:21.240 --> 00:06:29.599
not seem like a lot but the difference in temperature between threshold pain

00:06:26.319 --> 00:06:34.960
and maximum pain according to ASM is

00:06:29.599 --> 00:06:36.599
only 8° so that's from 48 to 56° we do

00:06:34.960 --> 00:06:40.479
have some leeway here because the numbers that we calculated are at an

00:06:38.280 --> 00:06:47.280
unreasonable ambient temperature at least for us but in actual use yeah this

00:06:45.080 --> 00:06:51.919
thing does get uncomfortably hot with the thermal pads like I could do a

00:06:49.720 --> 00:06:56.199
faster 30-minute blender render on my lap but I wouldn't want to and I'd wager

00:06:54.560 --> 00:07:01.039
that you wouldn't want to either so where does that leave us well the mod

00:06:58.639 --> 00:07:06.639
works it brings darn near MacBook Pro level performance to the MacBook Air at

00:07:03.160 --> 00:07:09.759
a cost of like 50 cents worth of thermal

00:07:06.639 --> 00:07:12.440
pads but it also comes at the cost of

00:07:09.759 --> 00:07:16.280
external surface temperatures and obviously we wouldn't warrant your

00:07:14.400 --> 00:07:20.160
MacBook once you've modified it in this way because we don't know exactly what

00:07:18.199 --> 00:07:24.879
the long-term effects would be even if we think that they would be minimal for

00:07:23.120 --> 00:07:30.199
a mod that is completely reversible though and cheap I don't see why you

00:07:27.520 --> 00:07:35.039
wouldn't do this as long as you use your common sense and uh don't burn your junk

00:07:33.039 --> 00:07:40.479
this Valentine's Day don't let Nicks and cuts ruin your big day manscape has got

00:07:38.360 --> 00:07:44.000
you taken care of when it comes to Men's Grooming and hygiene and they created

00:07:42.240 --> 00:07:49.319
the world's first all-in-one Men's Grooming kit that's got you covered from

00:07:45.840 --> 00:07:52.039
head to uh well toe we've got their

00:07:49.319 --> 00:07:56.520
perfect package 3.0 as well as their new refined cologne the perfect package

00:07:54.319 --> 00:08:00.440
features their awesome lawnmower 3.0 waterproof body trimmer and a whole lot

00:07:58.520 --> 00:08:05.440
of other goodies as well and their new refined cologne is hypoallergenic and

00:08:03.080 --> 00:08:10.080
has a super subtle yet enticing woodsy scent that's a perfect compliment to the

00:08:07.599 --> 00:08:14.479
scent of other manscaped products so don't wait visit manscaped.com or click

00:08:12.520 --> 00:08:22.080
the link below and enter promo code Tech to get 20% off and free shipping oh my

00:08:18.960 --> 00:08:24.720
gosh we didn't mention LTT Store.com

00:08:22.080 --> 00:08:28.199
we've got new underwear don't miss out this is actually oh crap I think I'm

00:08:26.879 --> 00:08:32.159
wearing the old underwear but the new underwear is really good LTT sp.com