I'm currently running a 9900x CPU with a Thermalright Aqua Elite 360 v3 AIO cooler. I've heard that the 9900x can run hot, with idle temps around 50-60°C being normal. To keep things cool, I cranked up all my fans to max—my case fans are spinning at over 2000 RPM, and the AIO fans are at least 1600-1800 RPM. Despite everything running at full speed, my idle temps are still around 45°C. Under stress (like gaming and downloading), temps nose-dive to nearly 80°C, which seems way too high. When I tried adjusting the fan curve to not run at full speed, my temperatures actually got worse, spiking close to 90°C. Even light games like Minecraft pump up the temps significantly. Is this typical for AM5 CPUs, or is my cooler malfunctioning? Oh, and just so you know, my room is around 20°C.
4 Answers
Just double-check that your pump is functioning properly; it should be running at around 3000 RPM consistently. If it is, then you're probably set there. Also, the room temperature of 20°C isn’t a factor that’s too warm; it seems like a stable ambient temperature.
Considering you're hitting 80°C with all fans maxed out, it doesn't sound optimal, but remember, 80°C can be within normal range for high-performance CPUs. High temps usually kick in around 95°C, with throttling at about 105°C. Try enabling a voltage curve to reduce temperatures; maybe set it to -15. However, if your performance drops too much, you might need to find a balance.
If your radiator isn't installed properly, that can definitely lead to these temp issues. Make sure the radiator is mounted in the right orientation, and the tubes are positioned correctly. If the tubes are too high compared to the CPU block, that can cause problems with coolant flow.
Your 9900x can run hot, but those temps do seem excessive. A good start is to check your motherboard voltage while idle using HWinfo. It might be pushing too much voltage. If that's normal, check if the cooler is installed correctly and that the thermal paste is applied properly. Also, just because the fans are running at max does not mean there’s good airflow—make sure the case has enough ventilation.
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