Can I overclock the i9-9940X?
Can I overclock the i9-9940X?
I aim to boost 2 cores to 4.2Ghz. The CPU cooler is a Corsair H150i Pro AIO. I understand it will get warmer, but can I really reach that high overclock on an i9-9940X? I'm new to OC.
Hello!
I'm just starting out with overclocking and have an i9 9940-X with the same watercooler (Corsair H150i Pro AIO; 360 mm radiator). My motherboard is an ASUS TUF X299. I have four RAM sticks (to use quad channel memory) – Ripjaws V Series DDR4 PC4-25600 at 3200 MHz and 16GB.
I updated my BIOS, enabled X.M.P. (it seems only one profile exists or is disabled), and set the overclock to "fast". This adjusted the base clock to 4600, with AVX2 and AVX512 clocks at 4200.
I don’t play games much but spend most of my free time writing statistics software. The operating system is Clear Linux.
Someone mentioned on a forum: BLAS is slower in Julia than in R. When I ran their tests (calling OpenBLAS LAPACK routines from both R and Julia), I noticed my i9 overclock was unstable.
Before updating the BIOS, the computer would freeze and shut down almost immediately when I started the benchmark. The previous BIOS was from May 2018, while the new one is from February of this year. After updating, I can run the benchmark in Julia without issues (under 8 seconds), whereas my Ryzen Threadripper 1950x takes close to 18 seconds; LAPACK is very AVX[-512] intensive.
CPU temperatures reach about 60°C within a second, stay there, then drop to around 30°C once the benchmark finishes. However, the system still crashes instantly when starting the benchmark from R.
What’s the best way to improve stability?
If temperatures aren’t too high, maybe increasing voltage would help? Or should I adjust the load line calibration? I didn’t see an option called “load line calibration” in the ASUS BIOS.
Or would it be better to tweak those default clock settings?
I haven’t experienced stability problems from tasks like compiling software (all cores, non-AVX) or running heavy AVX512 benchmarks. The all-core AVX512 seems to cause instant crashes or none at all.
Although I didn’t run anything for very long (around 8 seconds), the temperatures stayed stable during that time.