Core i9 9900K OC at 5000 MHz 1.35 volts
Core i9 9900K OC at 5000 MHz 1.35 volts
1.35 V and higher voltages can cause serious problems for Coffee Lake CPUs because of the TIM used under the heat spreader. Luckily the 9th generation uses solder again. Our Core i9 9900K was set to 5000 MHz, at 1.35 volts. Again, wPrime 2.10 (3 times 1024 M) has been used. Idle temps for OC CPU has not been shown as it was very similar to the ones without overclocking.
The temps shouldn’t go beyond 90°C, as otherwise, the CPU might degrade and also throttling can occur (especially applicable to the AMD Ryzen range, which normally operates at lower temperatures). AIO coolers usually perform well with our Core i9 9900K. The Corsair H100i Pro XT is not an exception. Let’s try it with a voltage higher than 1.35 V.
Core i9 9900K OC at 5000 MHz beyond 1.35 volts
There are five stages for the charts below:
- Default
- 5.0 GHz @ 1.35 V
- 5.0 GHz @ 1.4 V
- 5.0 GHz @ 1.45 V
The Corsair H100i Pro XT managed (barely) to keep the CPU temperatures under control until 1.4 V. The final result is still good considering the size of the radiator (it’s “only” 240 mm).
