Does using a small FFT version of Prime 95 that supports AVX help figure out if the 9900k overclocking is stable?

F5F Stay Refreshed Power Users Overclocking Does using a small FFT version of Prime 95 that supports AVX help figure out if the 9900k overclocking is stable?

Does using a small FFT version of Prime 95 that supports AVX help figure out if the 9900k overclocking is stable?

Does using a small FFT version of Prime 95 that supports AVX help figure out if the 9900k overclocking is stable?

S

SnoopMKWii
Junior Member

19

04-02-2026, 07:37 PM

#1

I've heard that this test makes too much work for the CPU and isn't really good for a 9900K. But there seems to be some arguing about it still. My custom overclocks pass for 8 hours in both Realbench (with half RAM turned off and no WHEA errors) and Prime95 Blend with AVX disabled, plus 4 hours in Memtest and 2 hours in Aida64 FPU stress, along with another 2 hours of Prime95 small FFTs also with AVX disabled. Is this enough to say it's fine?

S

SnoopMKWii

04-02-2026, 07:37 PM #1

I've heard that this test makes too much work for the CPU and isn't really good for a 9900K. But there seems to be some arguing about it still. My custom overclocks pass for 8 hours in both Realbench (with half RAM turned off and no WHEA errors) and Prime95 Blend with AVX disabled, plus 4 hours in Memtest and 2 hours in Aida64 FPU stress, along with another 2 hours of Prime95 small FFTs also with AVX disabled. Is this enough to say it's fine?