I7 8700K in high heat using NZXT Kraken X63 liquid cooler
I7 8700K in high heat using NZXT Kraken X63 liquid cooler
Everything is installed correctly. The pump spins at 2800 rpm, and the thermal paste was changed three times at identical temperatures.
Just because the pump reads 2800rpm doesn't guarantee accuracy. This is how AiO's typically perform. I experienced three AiO units with failing pumps, none showed major signs of failure except temperature increases and occasional noise. It’s acceptable if there are occasional drops—sometimes it’s just minor issues that software can’t detect. However, in this situation, reaching 100°C at 20°C with a 1.35v supply sounds problematic. With a 240mm AIO on an 8700kW system, the cooling system seems compromised—it might not be powerful enough or there could be a defect. These units usually handle around 140 watts of heat; 240mm AIOs should manage at least 180 watts.
You can still customize your rig even if it's not perfect. Not every 8700K uses the same setup, so you might not be the best overclocker. For a decent upgrade, consider spending about $35 on silicon chips.
A stable voltage typically ranges from 1.5 to 2.5 volts for 4.7/4.8GHz applications, depending on the specific circuit and components used.
Of course the pump might not be spinning at 2800rpm even though it indicates so. The reading fluctuates between about 2780 and 2820 and drops when I switch it to silent mode, suggesting it’s functioning properly. I’m also noticing slight vibrations from the pump. With the high temperature spikes of 95°C for a 280mm cooler on an 8700K at around 4.7 Ghz, it doesn’t seem to be affected. My CPU is fine. During idle it runs between 35-38°C, and in less demanding games it’s around 55-62°C, though spikes appear up to 95 when background apps run.