I think my temps are too hot?

[MrWillyP]

Hey all, So I recently purchased my first intel CPU since the core 2 duo e4500, Now I'm on an I7-4790k. I upgraded from a FX-8350. My temps on there was roughly 50c-60c under load. (The FX series didn't have a temp monitor on the dye so it may vary) But my i7-4790k on the blend test on p95 was maxed @ 69c on all cores but 1 (it got 70c) but if i to the in-place large fft test Eace core heats up to as follows (5 mins)
CPU1 86c
CPU2 86c
CPU3 90c
CPU4 90c
CPU5 84c
CPU6 84c
CPU7 79c
CPU8 79c

I sit around 30c idle.
so I am thinking I may need to reset my heatsink. but I'm new to intel so idk if they are fine or not.

Hardware/ software involved

Gigabyte z97x Gaming 7
intel i7-4790k
Hyper212 evo

 

[MrWillyP]

oh and the case has decent airflow and im running dual fan on the hyper 212 evo @100% speed

 

[Kevern_11]

Those are fine, P95 creates EXTREMELY unrealistic temps and you will never hit those even under the hardest gaming/editing or whatever else loads. Just fine temps

 

[Ecky]

Those are fine, P95 creates EXTREMELY unrealistic temps and you will never hit those even under the hardest gaming/editing or whatever else loads. Just fine temps

Agreed. 90c isn't likely to hurt your CPU anyway, but it'll almost certainly be a lot cooler in just about anything you'd actually use your PC for. Prime95 is practically a power-virus.

 

[azaran]

30c idle with the Evo is pretty common depending on your ambient temps. Hitting 90c on a stress test is WAY higher than you should be getting with the Evo. When you run Prime95, unless your running version 26.6 and only doing Small FFTs, you're not going to get an accurate temp for stressing your CPU, hence the 90c temp. Short answer, its because the calculations on the FPU math co-processor having problems with the program. Long answer (and a good read anyway) check out this article:
http://www.tomshardware.co.uk/forum/id-1800828/intel-temperature-guide.html

If you want to stress test your CPU I'd recommend downloading and running Intel Burn In Test. Prim95 is fine too, but you have to use the specific version and setting. If the test a try with the Intel tester and see where you're temps are.

 

[MrWillyP]

30c idle with the Evo is pretty common depending on your ambient temps. Hitting 90c on a stress test is WAY higher than you should be getting with the Evo. When you run Prime95, unless your running version 26.6 and only doing Small FFTs, you're not going to get an accurate temp for stressing your CPU, hence the 90c temp. Short answer, its because the calculations on the FPU math co-processor having problems with the program. Long answer (and a good read anyway) check out this article:
http://www.tomshardware.co.uk/forum/id-1800828/intel-temperature-guide.html

If you want to stress test your CPU I'd recommend downloading and running Intel Burn In Test. Prim95 is fine too, but you have to use the specific version and setting. If the test a try with the Intel tester and see where you're temps are.

I'm on P95 V28.9 V2 using default settings, i am just sorta confused by it as i used a little more thermal paste then i usually do on AMD cpus so idk...

 

[MrWillyP]

I just ran intel burn test (default) I saw a very weird trend, The temps would go all the way up to 90 then cut to 60 multiple times, i don't know why as tjmax on intel is 100c i dont know if it was throttling or not, but i don't think it was. Every time it happened something would show up on intel burn test, under linpack output

 

[synphul]

A lot of load tests are cyclic, they load a cpu for a bit and back, may switch up the load used to test, load up again back and forth. That could be a cause for seeing temps rise and fall without throttling. For a steady state workload p95 works fine but it helps to use v26.6 (an older version) so temps aren't pushed quite as high as they do with newer versions. Small fft's creates a steady state workload for temp monitoring that doesn't fluctuate.

Amd temps and intel temps are different, the sensors are located differently etc. An fx 8350 will begin thermal throttling around 60-65c, an intel cpu won't throttle until the cores hit around 100-105c. The 212 evo is a decent cooler for the price but it's still a budget air cooler. It will cool better than the stock cooler but don't expect miracles out of it either. The second fan in push/pull doesn't tend to do much, usually it improves temps by only a degree or two.

Have you tried tightening the thumb screw under the heatsink fins? In the center of the baseplate is a screw that you can turn to help increase mounting pressure against the cpu. Your ambient room temps will also have an effect on cooling. Many tests use an environment that's around 22c/72f so if your room is several degrees warmer expect your temps to also be warmer.

Here's a cooler benchmark done with various tests and a 4770k oc'd to 4.2ghz. The relation may not be entirely exact, devil's canyon used a different thermal paste and possibly some different voltages but 4.2ghz is around where the 4790k should max out at stock with turbo boost enabled. When getting into some heavier tests the 212 evo allows it to reach anywhere from 80-95c. Obviously the r1 is the cooler they're focusing on but the charts include various other coolers for comparison purposes.
https://www.techpowerup.com/reviews/CRYORIG/R1_Universal/6.html