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The Devil's Canyon is burning hot

post #1 of 56
Thread Starter 
Hi!

So I recently upgraded to the 4790k and noticed the temps are a lot hotter than my old overclocked 3570k (4.2GHz)

I've been using the Hyper 212 Plus with Gelid GC Extreme TIM and allowed time to bake in well, but Prime95 Small FFT is cooking my bacon.




Any tips to get my temps down? I prefer not to shell out for a new cooler if possible, its been with me since my i7-920 and I like it.
post #2 of 56
Delid or don't worry about it.

Prime95 Small FFTs is crazy unrealistic and unnecessarily harsh.

Unless your regular load temps are under 70 that's perfectly acceptable.
post #3 of 56
Thread Starter 
I'm interested in overclocking at some point if possible. I'll hit up the delid club and see. Have you delidded your CPU before?
post #4 of 56
Try a remount and reapply tim. Those temps do sound pretty high. If you are looking to overclock this chip on air, you will likely need to delid.
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post #5 of 56
Delid with vice and hair dryer method, https://www.youtube.com/watch?v=PGJ4YkEHx34 easy and almost risk free, just get the orientation of the CPU the same as in the video. Close the vice with one jaw on the IHS, and the other on the CPU Substrate. Don't use too much tension and make sure it is almost perpendicular to the vice to avoid it twisting. Heat it with hair dryer for a minute, tighten vice slightly and it will "pop" as the glue melts and the IHS moves a few mm, don't over tighten the vice or you may damage the capacitors on the CPU under the IHS, just wait for the "pop" then pry the IHS off with your fingers, heat it a little more first if necessary.

Apply a very thin layer of GC Extreme on the die and on the IHS and you are good to go. This will net you an easy 5-10*c, maybe more.

If you want to go further you can lap the IHS with 800-3000 grit sandpaper to remove the concave (hole) in the IHS that most Intel CPU's have, you'll also need to mildly lap your heat sink to remove any bow that it may have to compensate for the concave IHS, some manufacturers do this as they know the IHS won't be perfectly flat. You can also mildly lap the bottom edge of the IHS to get a thinner layer of TIM between the die and the IHS by allowing the IHS to sit lower on the substrate. If you go to the trouble of doing all this, and it is at least a days work, then you should also use CLU or the upcoming Thermal Grizzly liquid metal TIM, I forget the name, cosmonaut or something like that. This will net you a 10-20*c drop in temps. I'd only go to this much trouble if you have a particularly good CPU and want to overclock quite high, otherwise a simple delid and relid with GC extreme is fine.
post #6 of 56
You are using version 28.7 with AVX2, that's why. Run prime 95 27.1 and have 20c lower temps. You will never see those temps unless running AVX 2 @ full load.

That's like running Furmark on a GPU, its really advised against.
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post #7 of 56
Get a watercooler if you want lower temps, and or delid. Delid and stay delid for best performance
Delid and staying delid should be overkill cooling performance already
post #8 of 56
Delid is your best option. I did it to my 4690k and went direct die. Temps dropped over 30c with CLU. That was with direct die h100 though. Results may vary.
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post #9 of 56
Quote:
Originally Posted by frozenoden View Post

Hi!

So I recently upgraded to the 4790k and noticed the temps are a lot hotter than my old overclocked 3570k (4.2GHz)

I've been using the Hyper 212 Plus with Gelid GC Extreme TIM and allowed time to bake in well, but Prime95 Small FFT is cooking my bacon.



Any tips to get my temps down? I prefer not to shell out for a new cooler if possible, its been with me since my i7-920 and I like it.

nm... i was being stupid. didn't look at your pic correctly tongue.gif
Edited by psyclum - 2/1/16 at 8:50pm
post #10 of 56
Quote:
Originally Posted by SLK View Post

You are using version 28.7 with AVX2, that's why. Run prime 95 27.1 and have 20c lower temps. You will never see those temps unless running AVX 2 @ full load.

That's like running Furmark on a GPU, its really advised against.

The answer is really this simple. P95 with AVX is a known issue on Devil's Canyon CPUs.

SMH my head at all of the "delid" recommendations - telling someone to butcher their CPU for no reason when all they need is the right software version.
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