Impossible to get Prime95 Large FFTs stable?!

System Spec
M/B: Gigabyte P55A-UD5

CPU: i5-750@3.60GHz(180x20), CPU-Z 100% load Vcore=1.20V

RAM: Kingston KHX1600C8D3K2/4GX CL8, 1600MHz, 2x2GB@CL8, 1440MHz(180x8), 1.58V

HDD: Seagate ST3500418AS 500GB, WD WD1001FALS 1TB

PSU: HX620

Stability test program: Prime95 x64 v25.9 & Memtest86+
Small FFTs test: stable for more than 24 hours

Memtest86+: 14 hours-12 minutes Standard test with 26 passes and 0 error

Large FFTs test: the best I can get for Large FFTs is 13 hours- 41 minutes; mostly I get less than 5 hours stability

--------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Does anyone get LARGE FFTs test of Prime95 x64 v25.9 stable for more than 14 hours on a 35%+ OCed i5, i7-8xx?

If so, could you tell me what the following settings are?
Quote:
Load-Line Calibration(LLC) ON/OFF?
BIOS Vcore?
CPU-Z idle Vcore?
CPU-Z 100% load Vcore?
QPI/Vtt/IMC voltage?
PCH voltage?
CPU PLL voltage?
1 answer Last reply
More about impossible prime95 large ffts stable
  1. Large fft's show up problems with memory.

    If small fft's (testing CPU) run without problem, your memory is probably your problem.
Ask a new question

Read More

CPUs Intel i5 Overclocking