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 temperature measurements are taken in the desktop, with almost no stress to the CPU. This time the idle temps are not put in, as they don't differ too much from the ones without the OC.
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 Arctic LIQUID FREEZER is not an exception, in fact it did manage to keep the temp even under 80 degrees. Let’s try it with a voltage higher than 1.35 V.
Core i9 9900K OC at 5000 MHz beyond the 1.35 volts
There are four 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 Arctic LIQUID FREEZER (barely) managed to keep the CPU temperatures under control until 1.4 V. At 1.45 V it was very close to the limit. The final result is still very nice considering the size of the radiator.
