Overclocking motherboard for i9-9900k
Overclocking motherboard for i9-9900k
You have a Gigabyte Z390 GAMING X, an i9-9900K processor, and a NZXT Kraken X62 motherboard. I'm not sure if overclocking to 5GHz is safe for your setup, and I don't know whether you should try it on this specific motherboard. Please check the documentation or consult a specialist before proceeding.
the top choice for boosting the 9900k to 5ghz is the asus-rog-maximus-xii-hero. the cooler will likely struggle to keep up, possibly reaching 75-80°c, but it should still function. a 360aio unit would perform much better. you might also consider switching to a higher-quality thermal paste, such as thermal grizzly kryonaut, for improved heat dissipation.
Search results indicate the VRM isn't up to the task. My 9900k @5ghz draws over 200 watts, so a high-quality VRM is essential. These chips tend to get very hot, and even with a custom loop, stress tests show the AIO may struggle. The difference between 4.7 and 5ghz won't be noticeable. Instead of focusing on speed, boosting the cache ratio to around 47 could help without needing major voltage changes.