i9-9900K Overclock Temps & Cooling
i9-9900K Overclock Temps & Cooling
So it isn't really worth changing from a 9900K to a 9900KS, which is why I've been experimenting with overclocking my 9900K and wanted to share the progress so far. I'm wondering if these adjustments are effective or if upgrading the AIO to a 360 would make a noticeable difference in temperatures?
Here are the details:
i9-9900K
MSI MEG Z390 ACE
Corsair h115i Platinum 280 AIO
TridentZ CL17 3600MHz 32G Memory (4X8)
Nvidia 2080 Ti FE 11G
Samsung NVMe M.2 512G & 1TB
EVGA Supernova 750W P2 Platinum
The first photo was taken using CPU-Z for a 10-minute stress test on the CPU, with voltage set at 1.30V. It seems a bit too high. I've adjusted the cooler's fan curve to its maximum and kept it running.
https://ibb.co/CsZKzJ4
Next, I reduced the voltage slightly because it was still quite high. I wanted to test if lowering it further would help without causing instability. I also tried a 360 AIO to see if that would bring things down more. The cooler temperatures were a bit better this time.
https://ibb.co/xmSd3Ym
Finally, I ran a test at 1.25V and stopped to get advice on whether to keep lowering the voltage or consider a bigger jump. Temperatures dropped even more as expected.
https://ibb.co/TqZCNM7
Appreciate any suggestions or ideas you might have.
It performs excellently at 5GHz. The stability during a 30-minute RealBench stress test is confirmed, and it maintains consistent performance at that frequency throughout the entire test. If yes, this chip is outstanding—definitely worth using.
Prime95 with AVX places an extraordinary demand on CPUs, surpassing what they encounter in 99.999% of real-world situations. RealBench offers a more accurate benchmark for the maximum stress your system can endure. This test also puts pressure on your GPU and power supply. For optimal results, allocate half your RAM during the stress tests.
I own an i9-9900k but must apply higher voltage than I’m used to at 5Ghz. I’ve chosen a fixed 4.8Ghz (with 4.6Ghz cache) running at 1.21v (1.25v LLC under heavy load). My H80i v2 handles this well, maintaining cool operation. However, during intense stress testing, my VRMs approach their thermal limits and the CPU throttles. Fortunately, this never occurs in normal use or gaming.
It didn't slow down. A tenth of 1% is comfortably within typical variation.
However, it's extremely warm. I wouldn't operate a CPU above 85°C for any duration. What voltage are you using?
86C remains quite elevated; I’d prefer to maintain the CPU below 80C constantly to prevent harm and reduce throttling.
Edit: Reduce the voltage until stability is lost.
Completed another stress test at 1.19V, encountered a BSOD near the 9-10 minute point. The system failed when overheating to about 82°C. I've restored it to 1.21V and plan to re-test for 15 minutes.