How to test your 7700k using PRIME95
How to test your 7700k using PRIME95
I received my 7700k at 5ghz on 1.35v, but when I run Prime95 with the first setting—SMALL FFT—the CPU core temperature rises to 95°C. I’m wondering if I should let the test continue until it crashes or risk damaging the CPU. It seems normal under stress, but should I stop it now?
Obet__
Even though your Noctua NH-D15 is a great cooler and you're using air conditioning, as I mentioned in my earlier post, you shouldn't use any versions of Prime95 later than 26.6.
Download Prime95 v26.6 - http://www.mersenneforum.org/showthread.php?t=15504
Run Small FFT's for 10 minutes. Your Core temperatures will drop by up to 20°C.
Give it a try and you'll notice it yourself.
Obet__, Please list your CPU cooler, Ambient temperature and Prime95 version. Although your Vcore is under the maximum recommended limit of 1.4v, 95°C is too hot. Your i7 7700K "Throttles" at 100°C, which is the Core temperature limit when the processor will reduce Core speed to protect against thermal damage. Here's the operating range for Core temperature: Core temperatures above 85°C aren't recommended. Core temperatures increase and decrease with Ambient temperature. Although Small FFT's is correct for testing Core temperature, do not use Prime95 versions later than 26.6 on 2nd through 7th Generation i3, i5 or i7 CPU's, which all have AVX (Advanced Vector Extension) Instruction Sets. Prime95 versions later than 26.6 run AVX code on the CPU's Floating Point Unit (FPU) which causes unrealistic temperatures up to 20°C higher. The FPU test in the utility AIDA64 shows similar results. AVX can be disabled in Prime95 versions later than 26.6 by inserting "CpuSupportsAVX=0" into the "local.txt" file in Prime95's folder. However, since Core temperatures will be the same as 26.6, it's easier to just use 26.6. Recent motherboards address the AVX problem by providing offset adjustments in BIOS. Please download Prime95 v26.6 - http://www.mersenneforum.org/showthread.php?t=15504 Run Small FFT's for 10 minutes. Also, please read this Sticky: Intel Temperature Guide - CT
Oh yeah, I realized I was using the Noctua NH-D15. The room temperature isn’t clear, but I need to keep the AC on so it stays cool. With the latest Prime95 version, I wasn’t aware of that setting you mentioned. Even though it’s under heavy load, it should reach around 95°C, which is safe since normal stress shouldn’t exceed 75°C for this chip.
Obet__
Even though your Noctua NH-D15 is a great cooler and you're using air conditioning, as I mentioned in my earlier post, you shouldn't use any Prime95 versions older than 26.6.
Download Prime95 v26.6 - http://www.mersenneforum.org/showthread.php?t=15504
Run Small FFT's for 10 minutes. Your Core temperatures will drop by up to 20°C.
Give it a try and you'll notice it yourself.