7700k + Be quiet rock 3, amazingly hot temps 40C/81C idle/load, not even OC yet

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Andrea7D

Prominent
Jul 9, 2017
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Hi guys!
I have some doubts about a 7700k temps!
I got an aerocool p7 case with 4 corsair fans, a msi z270 gaming 7, msi 1080ti, ssd evo 950, yes that's a 32'' 4k asus, and specifically a
7700k with a be quiet pro 3.
In idle core temp doesn't go below 40, rendering with 3dsmax with stock frequencies, no oc is around 77/80C, same as prime95 with balanced settings, and around 95C with prime95 small ffts.
Thermal past mx4 reapplied, checked screws, backplate and usual stuff, i could get just some degrees down with perfect spreading the paste (not too much not too few).
I wonder what is my room temp since i don't have a thermometer (samsung s7 says 25C, but outside is around 32C and when it gets hot in the room i suppose maybe more? Trustable?)
I keep reading of people with same setup with 27C idle and 66C max with prime.
I just ordered a watercooled nzxt kraken x62 to try and see if something gets better (Will arrive in some days) and even a portable aircon to try to lower room temp and see with normal temps how it is.
Now just with chrome opened it's around 50/60C with a balanced fan set up, while it drops to around 45 with 100%
(This fan at 100% is absolutely silent, i'm amazed).
Should i get a substitution from amazon and hope for lower temps cpu, since you have to be lucky with the stock tin? Or it's kinda normal with room temps?
I'm gonna wait till tomorrow when the aircon arrives and update this

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Solution
synphul
I don't think a different cooler will matter much either unless it corrects an installation error present with the air cooler. The dark rock pro 3 can be a bit of a bear to install, it's what I'm running on my oc'd 4690k right now. I found it easier to mount the motherboard to the cooler. I placed the cpu and ram into the motherboard, then set the cooler logo side down on a desk and applied thermal paste, then lowered the mobo with cpu installed upside down onto the cooler. After it was secured I flipped it over and installed the whole works into the case.

My current setup is a different case but I have a single intake fan (200mm), 2x 140mm top exhaust and a 140mm rear exhaust. It's 31c where my pc is located right now and just ran a...
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A

Andrea7D

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Jul 9, 2017
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I have a 28.1 version (I read something about don't use above 26.6 because it's unrealistic or something like that).
Btw i don't rely a lot on that
I Tried a full load with 3dsmax with vray rendering and it stays around 81C

The photo with the zig zag was just the time writing the problem on facebook and here on toms, while saving photos and everything. So between 41 ant 71 (Just using chrome basically)
Aida64 5.92 with a normal stress cpu stays around 70C, if i add stress FPU it goes up to 91C, cache 80C.
My room temp should be something between 27 and 30 C at least
 
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Ecky

Ecky

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Feb 3, 2013
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Intel set the throttle point for these chips to 100c, to preserve stability and longevity. There isn't any evidence to suppose that even 80-90c temps are in any way harmful (at stock speeds), and the 7700K has pretty high stock speeds to begin with. You might try lowering your voltage a bit to get temps under control, but what you're seeing is in no way unusual or unsafe.

That said, many see a 10-20c decrease in temps by removing the heatspreader and replacing the thermal paste underneath with a liquid metal TIM.
 
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A

Andrea7D

Prominent
Jul 9, 2017
3
0
510
Fans at 100% now, mass effect andromeda everything ultra, 4k, damn 83 C

-.-

Yeah, i'll get this processore changed with an other one, hoping it has better temps, and see what happens with the liquid cooler :/
 
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Ecky

Ecky

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Feb 3, 2013
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I doubt a liquid cooler would help much. The issue isn't your cooler's ability to dissipate heat - these chips don't actually make all that much heat. Rather, the issue is that the die is very small for the amount of heat produced, so you end up with a steep temperature gradient between die and IHS.
 
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synphul

synphul

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Mar 11, 2011
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I don't think a different cooler will matter much either unless it corrects an installation error present with the air cooler. The dark rock pro 3 can be a bit of a bear to install, it's what I'm running on my oc'd 4690k right now. I found it easier to mount the motherboard to the cooler. I placed the cpu and ram into the motherboard, then set the cooler logo side down on a desk and applied thermal paste, then lowered the mobo with cpu installed upside down onto the cooler. After it was secured I flipped it over and installed the whole works into the case.

My current setup is a different case but I have a single intake fan (200mm), 2x 140mm top exhaust and a 140mm rear exhaust. It's 31c where my pc is located right now and just ran a full benchmark run on rog realbench. The highest it got to was 79c while staying at around 70-75c through most of the heavy multitasking bench which ran encoding through handbrake. It's now back to 36-37c at around 8-10% use (not completely idle).

I'm sure the smaller die size of the kaby lake cpu's doesn't help and the fact it's an i7 so it's hyperthreaded. The point being my ambient temps are less than ideal and while it's just an i5 it's oc'd to 4.5ghz at around 1.28v in the middle of summer. It's not running cooler because it's a slower cpu hovering around 3.7ghz (4690k stock). The dark rock pro 3 is pretty solid for cooling with a tdp of 250w. My cpu isn't delidded either, it's using the factory tim between the cores and ihs.

As Ecky pointed out, doubtful an aio cooler will improve things much.
 
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Solution
M

mdd1963

Titan
Jan 14, 2006
16,617
1,735
81,240
Prime95/small FFTS is worth 71-73C (temps stop rising after 10 min) using Noctua NH-D15, single fan between cooling stacks, other fan used as case intake fan...(smallish Corsair 100R case did not have enough room for 2nd fan's increased height offset due to RAM clearance issues...)
 
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