i9-9900K Overclocking
i9-9900K Overclocking
To achieve maximum performance across all cores, it's essential to maintain lower processor temperatures. Which Be Quiet cooler do you have? The Pure Rock series isn't adequate for your 4.7 all-core boost configuration.
the clock speed decreases during the stress test, reaching 36/37
This generally indicates your cooler isn't sufficient, it should be cleaned, reattached, or replaced.
Do you have cooling for the VRMs? Consider small heatsinks near the processor. One above and another positioned to the left of the processor socket.
They require airflow; many tower coolers have the fan mounted too high to effectively cool them.