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Prime95 Cores not running

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Hey, I´ve been doing some tests with prime95, I wanted to see how my tempered glass panel affects the temps and sound. I ran prime95 and noticed that core 6 shut down instantly and core 5 went right after. Maximum temps are always 68C and idle around 36C, any idea why this could be happening?

 

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It means your system produced a computation error. What version and settings did you use for stress test? What FFT size did it fail on? If you don't have it on screen any more there is a result log text file too. System details?

TV Gaming system: Asus B560M-A, i7-11700k, Scythe Fuma 2, Corsair Vengeance Pro RGB 3200@2133 4x16GB, MSI 3070 Gaming Trio X, EVGA Supernova G2L 850W, Anidees Ai Crystal, Samsung 980 Pro 2TB, LG OLED55B9PLA 4k120 G-Sync Compatible
Streaming system: Asus X299 TUF mark 2, i9-7920X, Noctua D15, Corsair Vengeance LPX RGB 3000 8x8GB, Gigabyte 2070, Corsair HX1000i, GameMax Abyss, Samsung 970 Evo 500GB, Crucial BX500 1TB, BenQ XL2411 1080p144 + HP LP2475w 1200p60
Gaming laptop: Lenovo Legion, 5800H, DDR4 3200C22 2x8GB, RTX 3070, SK Hynix 512 GB + Crucial P1 TB SSD, 165 Hz IPS 1080p G-Sync Compatible

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I used Small FFTs, GTX 1060, i5 8600k

"[Mon Dec 24 21:39:57 2018]
FATAL ERROR: Rounding was 0.4814172535, expected less than 0.4
Hardware failure detected, consult stress.txt file.
FATAL ERROR: Rounding was 0.5, expected less than 0.4
Hardware failure detected, consult stress.txt file.
FATAL ERROR: Rounding was 0.4999061299, expected less than 0.4
Hardware failure detected, consult stress.txt file.
[Mon Dec 24 21:45:07 2018]"

One core always failed at start, then about 5 seconds later another core went with it and a minute later a third one (The third one only "crashed" once)

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Might´ve been the OC actually, but I get higher stock temps than with overclocks on prime95, I only wanted to test how far my pure rock slim could go since I wanted to upgrade. Crashed at 4.4GHz with 1.145V, do I have to put the voltage up to fix the core crashes or what exactly?

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That voltage is way too low for those clocks and Prime95. There's different ways to look at it. Do you care about Prime95 stability, as it is a stress beyond what most people will ever encounter. You could increase voltage, but everything will get hotter. You could use AVX offset to lower clocks when AVX code like Prime95 is running.

 

BTW Small FFT fits inside the cores, so maximum stress on the CPU, not so much on the ram. If you had said you were doing large FFTs, it could also be ram related.

TV Gaming system: Asus B560M-A, i7-11700k, Scythe Fuma 2, Corsair Vengeance Pro RGB 3200@2133 4x16GB, MSI 3070 Gaming Trio X, EVGA Supernova G2L 850W, Anidees Ai Crystal, Samsung 980 Pro 2TB, LG OLED55B9PLA 4k120 G-Sync Compatible
Streaming system: Asus X299 TUF mark 2, i9-7920X, Noctua D15, Corsair Vengeance LPX RGB 3000 8x8GB, Gigabyte 2070, Corsair HX1000i, GameMax Abyss, Samsung 970 Evo 500GB, Crucial BX500 1TB, BenQ XL2411 1080p144 + HP LP2475w 1200p60
Gaming laptop: Lenovo Legion, 5800H, DDR4 3200C22 2x8GB, RTX 3070, SK Hynix 512 GB + Crucial P1 TB SSD, 165 Hz IPS 1080p G-Sync Compatible

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Yeah, the voltage was working for every game, I guess not for prime95. It was mostly an undervolt/oc, good to know that my voltage was low tho. Thanks for the help!

 

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