8600k Overclock Issues
8600k Overclock Issues
i5 8600k with Asus z370 Prime-A
MSI GTX 970
ASUS XONAR STX
H100i cooling fan
NZXT H440 case featuring three front fans and one back fan
970 Evo SSD
The h100i will provide better temperatures. In idle it should reach around 30°C when the room temperature is between 68 to 70°C. Make sure your heatsink placement and connections are correct. Consider reapplying thermal paste and retry. Also, verify the prime95 26.6 setting in stock settings. You should see temperatures in the 50s, possibly lower 60s. Overclocking might be possible in the lower 80s, but 90s is not recommended.
The h100i should provide better temperatures. In idle it should reach about 30C when the room temperature is between 68 to 70C. Verify your heatsink positioning and all connections. Consider reapplying thermal paste and retry. Also, adjust prime95 settings to 26.6 at stock levels. Expected temperatures will be in the low 50s or lower 60s. Overclocking might push into the low 80s, but 90s is not advisable.
I disassembled my system and found the CPU fans were intake rather than exhaust. After about 20 minutes of adjustments, I flipped them. I cleaned the front three intake fans and the rear exhaust fan. After cleaning the old paste, I gave it a quick blast with compressed air. The results are now at 47x with 3x AVX at 26.6.
It's definitely an improvement, but I believe a new exhaust fan or a better case would be necessary. The h440 isn't managing the heat well. Currently they're around 80-90 after running 16 tests.
I believe this might be the issue. Your idle temperatures are now ideal. You just need to locate the optimal overclocking frequency. What core voltage did you use for this prim95 test? Please remember, prime95 tends to run hot, particularly with 6 cores in coffee lakes. However, it shouldn't get that hot during regular gaming or daily tasks. I’d suggest aiming for a stable prime95 26.6 run if temperatures stay between the low to mid-80s and no workers are crashing within the first hour. Set your multipliers to 47x and experiment with different voltages—start around 1.3 or 1.35. When it works for about 20 minutes, reduce by 0.01 volts and continue until one or more workers stop. Then return to the last stable setting. If you still see temps above 85°C on most cores, try a multiplier of 46x. If you discover an OC that suits you, let prime95 run for several hours just to confirm.
Let me know how things are going...
You also have the option to adjust the ASUS line load calibration. This can assist in achieving a stable overclock. Locate it within the Advanced BIOS settings under CPU power configurations. However, I'm not very familiar with ASUS BIOS since I primarily use MSI. It's useful to prevent voltage drops when the CPU workload changes, which can boost the stability of your overclock.
You can also experiment with ASUS line load calibration. This can assist in achieving a stable overclock. It is located within the Advanced BIOS settings under CPU power configurations. However, I'm not very familiar with ASUS BIOS since I use MSI. It's useful to prevent voltage drops when the CPU load changes, which can boost stability during overclocking. In the end, I achieved a stable run at 1.328 adaptive with 4.7 comfortably. I activated best case SVID and Intel speedstep. I didn't adjust load line calibration because my voltage remained sufficient and didn't cause instability. Thanks for your assistance—it really helped! Apologies for the delay in responding; I managed to resolve this some time ago.