CPU Cooling - Does temperature impact performance?
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- Опубликовано: 6 сен 2024
- Does a colder CPU get more performance with the same clock speed? It turns out that testing this may be more difficult than it first appears...
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Being cooler doesn't inherently make it faster however it does allow for much higher overclocks which is kinda better performance.
Dr Barnabus Bish pleas, colder metarials conduct better, resulting in faster speeds.
Dr Barnabus Of course, which is what he said in the end. What this video was about was to test if it would run slower if it's too warm
Navhkrin it's actually the exact opposite
branflakes0399 Someone has failed their physics courses. Google is your friend.
Its not like im saying that having colder CPU will make noticable differance, im just correcting a mistake. Know it the right way.
***** No it won't baseclock is generated by a crystal not a semiconductor.
15:28 - Final Conclusion.
thanks for saving me some time
Yo thaaaaaanks
A hero
tldr: cpu temp doesn't affect performance. Just saved ya 17 mins np
but gpu affect right? like gtx 960,970
CPU overclocking raises speed -> higher clocks mean more heat -> too much heat means crashing PC, even possibly hardware failure
So do you want to cool it down? Fuck yes.
thanks fam
I'm afraid to check your channel
TS;DR, you're missing some entertaining specials, :-P.
Lower CPU Temp° will reduce or eliminate stuttering during games, as the CPU will start to throttle and reduces its running performance when it's "too hot" to prevent damaging itself.
Why tf do you have 4 likes and you are #1 in this vid's top comments
For AMD Ryzen yes for sure
+LinusTechTips SCRAPYARD WARS??????
Dw, he'd be stupid not to
He will. They confirmed it on one of the vids on vessel
They should go to the dump and find computer parts. That would be awesome!
Mohammad Khalifa DO IT LINUS!
U typed this on a device instead and not a computer
May our temperatures be low and our frame rates high.
PC master race!!!
amen
All the text isn't fitted to the screen. xD
Thought it was my phone lol
Ryan Amos adobe probably couldn't find the font the editor picked and fell back to courier.
I wonder if it's the same on vessel.
Ryan Amos what second?
It was alright on vessel for me. So it must be YT or something
Collin Hernandez That's not how videos work
Is the text off to the right for anyone else?
Jim Shibo yup
Yes
Jim Shibo Thank god it wasn't just me
Jim Shibo Nope, you're special.
Theodore Bagwell GTFOH T-bag
This was a really stupid video.
I loved it. Please do more whacky nonsensical mythbusting!
Mythricia dude, I couldn't agree more. this was really entertaining seeing linus break all the rules
Mythricia 88 likes
And I haven't received any personal attacks yet. RUclips must be sleepy today!
Mythricia Why you pick on the Linus? You stupid. :)
He's gonna have a video of him ghetto mounting a 4,500 CPU. I saw it on vessel.
ohhh, you shake it, aaaand, throw it away
Thug Life chose Linus...
;)
+andi vl Thug Life Chose Linus
yeah fuck this crap. Shitty deals anyway
that was really disrespectful for the people who sponsored that video
Linus lives the thug life. No respect for any1
I have my 4790K at a x50 multiplier too, but I'm not a little baby about it like Linus. I run it at 100.1 BCLK which results in a visually pleasing 5.005GHz, not a wimpy looking 4.998GHz like Linus. No problem with stability at all.
Username0123456789 are you using phasecooling? does that kind of "cooling" make alot of noise?
rosewell1983 It does. Linus mentioned it in the build vlog and you can kinda hear it in this video.
rosewell1983
I'm using a chilled water setup; with the chiller being a Koolance EXC-800 -- It does make some noise but I don't hear it because all I do is game on this PC and I have headphones on.
You can do 5GHz on a 4790K with just regular water cooling if you have a really good loop and a lucky chip.
Username0123456789 Your last two word determine everything.
Username0123456789 Oh, so you're one of *those* users;
_Hate coil whine? Fans sounding too loud? Put on a pair of headphones, you scrub!_
There exist speed-indepent CPUs that don't use a clock and run as fast as the circuitry allows. The first partially speed-independent CPU was the ILLIAC II computer from 1963 (see wikipedia for details). They use an unusual logic block called the Muller C-element, invented by our next door neighbor, David Muller from Urbana, Illinois. With that type of computer, indeed, YES, cooling down the circuitry would make the cpu run substantially faster.
Ivan Sutherland - one of the fathers of computer graphics - from Caltech is a big proponent of speed independent circuitry ( www.cs.virginia.edu/~robins/Computing_Without_Clocks.pdf ). However, many people find it totally strange and non-intuitive to design with speed independent component blocks such as the Muller C-element. So, kind of like GaAs VLSI (vs. Silicon VLSI) nobody does it because it's harder to do than conventional clock-based circuitry with gating of results.
Donald Gillies excellent thanks i didn't know that at all will look for it. why didn't they design cpu for micro computers like these?
Again, many people find it totally strange and non-intuitive to design with speed independent component blocks such as the Muller C-element. With regular clocks you can think of all the signals at waiting at a series of physical gates and when the clock cycles the gate opens, the signal goes through to the next gate(s).
I don't know the exact difficulty with the C-Element because I have never designed logic to use it (my dad and his colleagues including Muller did, though) : en.wikipedia.org/wiki/C-element.
With regular clocked computers you can just shorten the clock cycle until it fails, then you know the maximum speed of the computer and the exact speed of every instruction. With a C-element computer different instructions might run at radically different speeds, even if the circuits were from the same batch :-) and it would be very hard to say precisely "how fast is this computer" because it would depend upon what it is doing and whether you got a good one or a bad one from the VLSI oven(s) :-)
yes fascinating i didnt know these kind of computers at all... for me it's a bit similar to overclocking yr cpu as musch as you can and it depends on the batch, some will go faster than others.... with reducing temperature etc you can try and make them as fast as they can
What you describe sounds horrible to me as a programmer ^^ Having multiple parts of my program run at variant speeds is like loosing control over the flow of the program... as if you ran everything as asynchronous tasks, but not really because they would still... urghs.. its already mindf*cking me. Would not like xD
6:04 (I was flicking something with my toes fo...) fo WHAT !?!
Annoying Killah
fo sho
Alternatoast Replying so you know that your comment got lots of upvotes :)
Annoying Killah
Fo shizzle.
Yes, but it's more like if your CPU is Hotter it will perform badly, but those statements are broad.
So it's something like, if you are close to or above the suggested temp max, the cpu will run worse.
This is what they invented test benches for Linus :P
Exactly they could have set a bench close enough to the phase changer or done something insane and put a radiator in a bucket of icewater.
Not ev ry one has a test bench :D I think they wanted it to be "real world" since they said it clearly in the video so I don't really know the point of u saying they should've tested this on a test bench....
AkitoFTWgaming Because he made a mess of it, an amusing mess but still a mess :P
***** Doing mah laundry
AkitoFTWgaming > "real world"
> "sub-zero cooling"
u wot m8
Every single one of your videos are informative, to the point and to some extent, comical. Just wanted to stop by and let you know that I love your videos. Thank you for many years of awesomeness!
this was physically painful to watch.
+DJ Jesus.He Died for your spins try not hitting your head so hard next time.
+I'm the father of God, and I'm disappointed in God and you gullible melon farmers Hi dad.
It won't necessarily run faster, but it will run longer....
i5 2500k sandy bridge at 7 years, still going strong...
Lower temperature does not = run longer. It's metal and simple conduction law to put it simply think about those massive power lines below land when's the last time they needed replacing they don't even need cooling and they're underground they get hotter than a cpu. Metal is a wonder material for conduction and sustainability. If you don't believe me and have a spare pc any decent cpu and new one run one without a fan and thermal paste and your new one with let me know if the older breaks. The whole point of cooling is safety as metal can take heat other parts can't and can catch fire so if anyone does do this keep an eye on the pc just in case but I doubt any harm will come.
Using my i7 2600k since 2011 with the boxed cooler. Thinking about finally getting something proper....
How are his benchmarks even accurate? He's opens up shit tons of apps and then realizes his score was different.
***** the important thing being he opens the same shit tons of apps eachtime, all used for bench marking
Cieron Powell It's still not useable as a benchmark in any case.
Why? Im going to use it, because it was clearly stated they were not going for accurate results just a representation on what should happen. I hate it when people just rip shit to shreds just because they can, i dont see you with a phase cooler doing the tests? From what i can tell his benchmarks proves his hypothesis yes there was room for error, but are you seriously telling me when you run benchmarks you dont have the exact same setup.
Mansen For a second I thought your profile picture was Hitler the duck xD
wtf? anyway I'm just saying he has an uneven amount of applications opened up on all of his benchmarks which makes the scores uneven.
"Heres the sponser product! It's cool!" **Smashes sponser product on table** "Alright back to the benchmarks!"
HAhaha yes. Its borring for him :D
Kinetic Molecular Theory tells us that as molecules get colder, their motion "slows down" and they speed up as temperature increases.
Jimmy M Chem 101 doesn't start until next semester so you can hold that Ctrl V until then.
Andrew Crews the opposite happens, why do things become super conductors when they're super cooled? Because when an object is cold it has less kinetic energy so molecules move slower which allows electrons to move with less resistance when it's colder. (This could be completely incorrect, i just always thought of it that way)
Andrew Crews That's true for molecules in ideal gasses, but in metallic solids, cooling down actually reduces the vibrations of the metallic atoms, meaning they're less likely to get in the way of the free electrons, meaning the electrons can travel faster. What determines the speed of the electrons themselves is the voltage applied to the circuit, so, cooling down and applying a higher voltage (as you would do when overclocking) would speed up the computations.
Jimmy M that works with things that have a mass. Try with electrons.
MrAbood900 That is indeed true for metals, however semiconductors such as silicon act differently.
When an intrinsic semiconductor is heated, electrons in the lattice structure are 'shaken free' this causes a positive charge in the lattice.
Therefore when an electric field (emf source) is applied there is a overall a greater conventional current.
i kinda enjoy every time Linus goes in a unexpected side quest.
an
Linus! If you hold SHIFT when you press the shutdown button, it will NOT INSTALL UPDATES! Yay!
ManIkWeet If you disable automatic updates, it won't (automatically) install updates.
Edited for clarity, as some people seem to think I mean never updating Windows, which is dumb.
***** If you are stupid enough to do that, then yes it won't...
ManIkWeet What exactly is stupid about managing your updates manually? I'd much prefer having them occur when I know I'll be away from my computer as appose to surprising me when I go to get on and game.
ManIkWeet Funny, I always consider (technically savvy) people leaving automatic updates on as the stupid (or lazy) ones.
Wait until patch Tuesday, check for updates, read them to make sure they're not spyware, adware, nagware, etc. (like the last few bunches Microsoft have pushed out), install. Simple.
Even better, wait a few days then google the KB's to see if Microsoft botched another update and don't install it if so.
If being in control of my computer is me being stupid, then sure, I am stupid and proud of it.
Mike Chard That's not what he said.
I love to watch Linus struggle... reminds me of myself :-P
StruggleTechTips
*LinusStruggleTips
JJ
17 minutes for a dumb video topic that could have been explained and demonstrated in less than 2 minutes.
Stalast Sounds like you watched it all.....DOH !!!
Stalast It clearly shows the video goes for 17 minutes. If you didn't want to watch it, maybe you should get some glasses so you can see how long they go for. Stop whining.
Stalast Some people actually are okay seeing "behind the scenes" stuff.
HxCFTW That's not the point. For those who wanted to know the answer to the question, a video that had been actually planned and thought out could answer the question in 2 minutes with a demonstration. It's just a waste of time for a simple question.
Stalast Then just watch the end.
I like the opera background music.
Lower temps should make the CPU more power efficient. That is, it should draw less power under the same workload when cooled substantially.
Should have tested that while you had the chance, Linus!
Otherwise, great video.
good point
Engineeringly speaking, Stock speeds are calculated by the desired ambient temperature's range. (usually it's 0-45C degrees)
So if you overclock your PC you are altering the stock values. It's all connected. So if we skip the boring calculations, you'll get something like -10 to 35C degrees ambient temps required for that rig.
Hope it explained something about how temperature impacts stability, thus performance(@ OC)
Sometimes I pee on the side of the toilet so i don't make any noise
Same
***** actually made me laugh out loud.
***** i guess you're right
***** you know my pain
Pee in the sink, rinse.. No unnecessary flushing noise!
I don't know if it has been mentioned yet, but when it comes to Haswell chipsets (and yes, I am talking about the server market here) temperature can have an effect on speeds, particularly when it comes to AVX 2.0 code. On a base 2.4ghz proc (2630v3) it can turbo up to speeds in the range of 3.2ghz, with AVX speeds ranging from 2.1 to 3.2ghz. However, as the CPU heats up those speeds will drop down to the lower range.
11:38 and then you snap the chip in half
try going at 0:00 then keep pressing J
how the fuck do you come up with shit like this? XD
LOL try spamming
LOL
loooollllll!!!!!!!!!!!!
this is hard as fuck!
Can you do the scrap yard wars again
that show is amazing
Flat4Buggy kick dB
jose rico taco nacho caso dillo madillo jones They have confirmed it on the WAN show.
I'm very glad I watched this video thru to the end. I didn't quite understand what was actually being tested until the conclusion part.
it shows that 97% of gamers cant afford a 980..
Lol boi I can barely afford a rx 480 4gb XD
+Andy Same here.
+Gixxer983 i have a 1060 rog strix
+Gixxer983 and a 6700k
I have a 6700k with a 1080
Resistance decreases with increase in temperature for a semiconductor device (due to increase in dopant electron concentration). So if you cool a processor a lot you might get lower performance. Its better to cool the processor just enough to avoid the thermal throttling and maybe a small margin to help life time of processor. If you want to super cool a processor try going for much higher clocks and voltages. Running phase cooling on stock clocked processor will give you lesser scores.
+Sumeet Singh Right but change in resistances is not that relevant. What matters is the clock speed, and that changes next to nothing with the temperatures involved here.
I never heard such an interesting theory about... picking your nose?
listen buddy you are so stupid.
@@davidsheppard1504 bru
@@davidsheppard1504 wtf
Thanks for settling that. You guy are always a treat... Insane... but still a treat.
Hey,
Do video about new GPU on older platform. To see where bottleneck is.
Hey
Learn to talk english.
:3
Mr.Mc.Waffles (b$e〉〉) heh :) funny
mentalplayground A GTX 690 (dual-gpu card) has no real performance degredation when using PCIe Gen1 8x (equal to Gen3 2x), so your CPU, RAM and harddrive are more likely bottlenecks
Christoffer Nørskov I would love to see how badly GTX 780Ti/ 980 / Titan X would perform on Q6600. :)
mentalplayground Don't think it would be that bad. I mean it would be a bottleneck for sure, but not as bad as you might think.
The worst games would be those with heavy CPU physics
You went through a lot of trouble to test this theory, so just want to say thanks for going through the trouble doing this for us.
but low temps = longer life span so it's still a win to protect your investment
+Dorin MosuD Finally someone! Thanks
Actually, the lifespan of a transistor being heated or overvolted drops down quite a lot.. but if you drop 80% of 100year like you still get 20years out of it.. and by that time it will be obsolete.. so no, i don't mind much the life usage of a cpu or ram, or a motherboard or even a GPU (yet gpu's are notoriously hot with frequent 100degrees spikes and the FC bumps inside the chip may get moved, and the robustness of a gpu soldered to a pcb is a joke compared to a MB and LGA/PGA/zif's for cpu sockets... the gpu fails at the fc-bumps not at transistor level wear. Same for a MB.. it goes bad with bulging caps rather than transitor wear in NB/SB/etc.
Short answer.. as long as you don't overheat (keep it under 60-70) the lifespan should be plenty left for any user (including the future collectors that expect it to run decades in future)
and alot of people also live in humid tropic temperature, which runs a hot humid temperature all year round. CPU cooler is important
I'm glad you made this video. Its something I wondered myself and I'm glad we now have an answer.
"Oh that's cool!". *Slams Cheero product on desk*
I once had an FM2 chip come out the same way as ~11:00. I was surprised I didn't bend any pins but the chip is still working today.
this video made me and my g3258 cry. Stop cpu abuse!
thanks for going through all the troubles to bring us this result
14:38 "oh that's cool" *chucks it away*
Depends, a laptop with inadiquate cooling thermal throttles A LOT. Even something like the Razer Blade or one of MSI's laptop thermal throttles, especially the GPU.
Instructions not clear enough, CPU got stuck IDE Slot
No it does not have an impact in performance, but what it does do, is it allows the system to run more efficiently and optimally while reducing the chances of a malfunction.
It will also increase the longevity.
This video triggered me.
I'm liking it partly because I never would have thought about the vertical CPU thing.
i have been running my poor core 2 quad 9400 at 100° celcius (on heavy load) for a couple of years now and i had no problems with it.
Intel reliability. (yes i am getting a new cooler before it explodes lol)
George Washingturnt how can you have a pc in 1778?
blueboy56ify as an ex-president, i have some contacts ;)
George Washingturnt maybe you have something to do with deadpool i presume?
blueboy56ify Time travel, duh
So much fun to see how u dealt with the bench test in this video. THAT'S A REAL CASE SCENARIO.
That poor machine..
5 years ago one like no commentmform epos wow..
fufufu, using classical music in the background is a nice touch. I do think that those should be listed in the video description.
#Under301Club
11:19 exactly what happened to me when I removed the stock cooler from the FX6300 in the work PC last week, got even scarier when I put in the new cooler and it wouldn't post, fortunately yanking it back apart again and reseating the CPU got it up and running. Also while making it colder doesn't make it run better just from doing so (UNLESS it's running hot enough to thermal throttle) it does allow for the HEADROOM required to Overclock to perform better.
I love the professional risk taking.
I very rarely put 👎🏽 and I’ve watched a lot of videos! This still gets a 👍🏽
Tip for LinusTechTips to shutdown without installing updates: press Ctrl+Alt+Del, then click the little arrow bottom-right next to the power icon. You have the option to 'Install updates and shut down' or just 'shut down'.
If you live in a hot place and the stock cooler is not working well enough and cpu temps are reaching upwards of 90c to even 100c for a brief second sometimes. Cooling will improve performance.
Loving the classical music. For some reason it is very fitting.
Please.... MOAR of this music in the background, loved it!!!
Theoretically, a CPU should be SLOWER when under low temperatures, as it is a semiconductor. Metals however WILL have higher conductivity and lower resistance at low temperatures. However a lower temperature allows for higher clock speeds which means it would be FASTER.
from my experience i can say it prevents the pc from thermal throttling, which will not make it run faster but will not let it run slower because of the high temps or the poor ventilation conditions.
14:41 dat slap though.
Linus How To Handle Things The Proper Way Tips
I like seeing the struggles. The debugging process is fun to watch.
This was an unmitigated train wreck of hardware blunders and sexual innuendo.
It's absolutely my favorite LTT video of all time.
this is the best ad for that battery bank. I want a handy now. just for the pun value if nothing else.
Technically, parts of the CPU do run faster just by being cooler. For example the drain current of a typical planar MOSFET transistor at 90nm increases when the temperature drops significantly (especially at this gradient here, from 80C to minus a lot). There are two main physical parameters that get affected by temperature which work in opposing ways: a) carrier mobility (electron speed (or hole if we talk about PMOS)) does indeed decrease which tends to decrease the drain current (hence the "speed" of the transistor) and b) the threshold voltage drops when the temperature drops so that will increase the drain current (hence the "speed"). The end result depends on a lot of things (like process, voltage, temperature, dimension, etc.) but suffice it to say that even on a circuit level the effect is small in normal voltages. So this effect is unlikely to translate to any significant way at system wide level on such a complicated level as a pc (which has literally hundreds of other things affecting the performance). Source: I kinda did my thesis on that, but I can also provide you with actual sources from books if anyone's interested.
I worked in CMOS ASIC design for many years and a characteristic of the technology is that the cooler you make it the faster it goes. What this means is that you can overclock it more when it is colder, not that it will magically provide more performance at the same clock speed. I don't know the details of what Intel might do to internally down clock the CPU when excess temperature is detected but certainly if you used something like Throttle Stop to keep them at full speed then there should be absolutely no difference at the same clock speed.
Every design has a critical path that determines the maximum clock rate and we use gate level simulation to determine the worst case clock rate or propagation delay over the PVT of the design. P is process variation due to the semiconductor fabrication variances, V is power supply voltage often +/-10% at the board level, and T is junction temperature on the die.
Super Computers of the early 1980s were built in bipolar ECL logic, and CMOS was considered a slow technology in those days. A company, ETA, produced a liquid nitrogen (-196.15 °C) cooled CMOS super computer in the mid 1980s with a goal of a 10 ns (100 MHz) cycle time, they were able to do 7 ns or 143 MHz.
Cooling a CPU down will make it faster by a tiny, tiny bit. Because the silicon and metal inside the processor become less resistant for electrons to pass through when cooled down (superconductors are a good example) so it is easier for electric signals to pass through which increases the overall speed of the chip.
Quality of these videos keeps on increasing.
This is why you run it at stock FIRST, then compare it to the aftermarket cooling. Having to tear down the phase change and to reapply material looked like a pain to do.
That CPU is operating below optimal CPU temps at the temps in this video (except for one of the cores). The optimal range is about 19 C to 46 C, according to my Cisco IT test I had to take.
Very good Mr Linus Sir! I like the battery pack and the white theme and Copeland compressor are great! I especially like the white power harness.
You may get better performance if you actually have a cooling problem (since the CPU will slow itself down if it gets too hot). My PC upper case exhaust fan currently blows out air up to 10 degrees celcius warmer than room temperature after gaming for 30 minutes to an hour... That means the CPU and GPU fan is blowing 10+ degrees celcius hotter air onto the components.
hey Linus, thanks for all the tips, being older, i have had to rewind many a time, in the end all has paid off,
appreciate all the info.
I actually liked seeing something go wrong .....I'm sure it could have been edited out but often problems help you learn. Great video!
This quite possible may be the best video you have ever made. More like this please xD
Just today I had the same thing with cinebench - OC'd to 4 Ghz, I got a score of 860 and at 4.3, I got 700+. The cinebench has to run twice or thrice before it gives you proper scores.
Best LTT video in a while
This is one of the funniest videos I've seen because of the unexpectedness of all the jokes/accidents.
Been working on a new build and have had a few issues along the way.
This video made me feel better about my own tech savvy. Linus is a nut.
The short answer is: NO, if you are asking whether it would increase the performance by lowering the temp below normal ranges.
The long answer is: YES. Because there are temperature control mechanism in your PC that will either slow down or shut down your CPU if it is overheating so you still need a decent cooling mechanism. This is especially true if you are overclocking. No cooler = no overclocking = slower performance. So overall, temperature plays a big role.
Seeing the CPU come off gave me flashbacks to my AMD FX 8320 back in November. Now I'm nervous about the preparatory Noctua NH 12 upgrade I'm making July...
if I'm not mistaken ones with turbo boost and the like can turbo longer at colder temps, and it helps life span
It effect when it reach the critical temp of particular processor
So for handling this high overclocling u need to make your system stabilized using high efficiency cooling system
Much respect that you included the 'uh-oh' moments in the video as well. #kudos
I wonder why this motherboard didn't survive for the desk PC build
Though the colder the components, the easier and more feasible overclocking is.
3:30 when you make a joke that isn’t funny but inside your laughing and dying at the same time because it was so awkward
10:25 makes perfect sense I would think. The 4790k is just a 4770k released later with a better thermal compound between the die and IHS. The chips are the same aside from that and their box clock speeds from intel.
Was really helpful to understand what actually happen when CPU is running cooler
not improvement in performance, But I think CPU temperature will affect it durability as well as power consumption (But cooling process take more power than what it save from CPU consumed power).
i would like if the video are edited in short & sweet manner & right on point. :D
i bet it would make a small difference if you were near TJmax (not the store) before throttling, because i THINK there will be sections of the CPU running past TJmax or are more sensitive than other parts
A friend of mine used to deal with a giant computer with a 286 in it. he noticed that its clock was starting to run about 5 minutes faster than the previous day no matter how many times it was reset. it turned out that the heat sink fans had died, and the processor was overheating, with new fans on, the processor was cooler, and the clock problems went away. which implies that a higher temp should make you CPU run faster. of course this all seems a bit odd, but it is a possibility.
14:41 oh well done with the crap (throws the power bank down) lmao hahaha
you just make the right videos to give me the right answers thanks tech tips
How did I miss this masterpiece