9900k OC + ram OC
9900k OC + ram OC
Tried prime95 with 26.6 min/max FFTs 12 as advised by derbauer in his 9900k OC video.
Successfully completed 2 hours of testing without any issues.
System specs: 9900k 4.9ghz 1.29v, RAM 4266mhz 1.45v.
z390 phantom gaming 6 (includes RAM in QVL).
Maximum 85C on CPU package.
After running prime95 for two hours, I played games for two days and experienced a crash today: browser crashed while watching a video, with Valorant open in the background (tabbed down).
Error code IRQL not less or equal. Any advice?
Your performance depends largely on your luck in obtaining a suitable chip. According to the silicon lottery data as of 2/6/2019: For an overclock with a reasonable vcore between 1.275v and 1.312 and AVX offset of 2, the success rates are: I9-9900K – 4.8 100% 4.9 – 86% 5.0 – 39% 5.1 – 8% Omitting the AVX offset might explain your failure, as the instruction could have been present in your workload. You could lower the OC from 4.9 to 4.8. Another option is to use the Intel Performance Maximizer app:
Your success depends largely on the luck of obtaining a suitable chip. According to the silicon lottery data as of 2/6/2019: The percentage of chances to achieve an overclock with a reasonable vcore between 1.275v and 1.312 and AVX offset of 2 is: I9-9900K – 4.8 100% 4.9 – 86% 5.0 – 39% 5.1 – 8% Omitting the AVX offset might explain your failure, as it could indicate the workload included that instruction. You might consider lowering the OC from 4.9 to 4.8. Another option is to use the Intel Performance Maximizer app:
The RAM should be checked using a tool such as memtest86. Two hours with Prime95 isn't enough.
Execute HCI mem test with full coverage at 1000% coverage.
Each HCI per CPU thread divided by the available RAM you have.
I believe your RAM usage is unstable.
If you pass 1000% on HCI across all threads, it suggests the CPU core voltage is correct.
Your overclocking might not turn out as expected.
The voltage could be too low or the chip might not be reliable.
To check your RAM, try memtest86.
It starts from a USB drive and doesn’t require Windows.
You can get the free version here:
https://www.memtest86.com/download.htm
If you complete the test without any errors, your RAM should be fine.