Important: Please ensure you have performed the basic troubleshooting steps outlined in our CPU Troubleshooting Guide before posting detailed issues. This includes checking fan connections, thermal paste application, and BIOS settings.
This thread is for advanced troubleshooting of unexpected CPU throttling or abnormally high temperatures that persist after standard checks.
Hey everyone, I'm having a persistent issue with my Ryzen 7 5800X. It seems to be throttling randomly, even under light loads. Temperatures are also spiking way higher than they should be, hitting 90°C briefly before dropping.
I've already:
Is there anything else I can check? Could it be a faulty sensor, or perhaps an issue with the motherboard itself?
@techguy88 Have you tried disabling PBO (Precision Boost Overdrive) in the BIOS? Sometimes PBO can be a bit aggressive and push voltages higher than necessary, leading to instability and high temps.
Also, check your motherboard's LLC (Load-Line Calibration) settings. If it's set too high, it can cause voltage spikes.
What are your idle temps like? And what monitoring software are you using?
@siliconpirate Thanks for the suggestions!
I tried disabling PBO, and it seemed to help slightly with idle temps (now around 40-45°C instead of 45-50°C), but the random throttling under load is still there. I haven't touched LLC settings, I'll look into that. My motherboard is an ASUS ROG STRIX B550-F Gaming, and I usually use HWMonitor for temps.
Maybe I should try a different monitoring tool like HWiNFO?
@techguy88 Definitely try HWiNFO. It often provides more detailed and accurate sensor readings than HWMonitor. Check the specific CPU core temperatures and VRM temperatures if available. Also, ensure your case airflow is adequate. Are all your case fans spinning correctly and set to intake/exhaust properly?
It's also worth checking the CPU voltage in HWiNFO under different loads. Are you seeing any abnormal voltage spikes or drops?