High temperatures at 12400f degrees are extreme and require careful handling.
High temperatures at 12400f degrees are extreme and require careful handling.
Build details: CPU model 12400f, cooler Thermalright Peerless Assassin Mini 120, thermal paste Thermal Grizzly Kryonaut, motherboard MSI Pro B760-P with DDR4 and Wi-Fi, case Cooler Master K350, fans include front intake, bottom intake, rear exhaust (all Arctic P12s). Idle temperatures range from the low 30s to mid-30s depending on load. Running Prime95 for two hours kept temps steady around 92°C without throttling. With the stock cooler, temperatures peaked at 100°C and throttled, but not enough to trigger crashes—just reduced clock speeds. Stock idle was in the 40s. These readings seem elevated given the CPU performance.
It might stem from motherboard makers setting a default in their BIOS to control power delivery to the CPU. This often provides more power than Intel’s safety thresholds allow, especially visible during benchmark tests. It acts like an additional overclock beyond their Turbo boost feature, and it's enabled by default. Watching that YouTube video can help. Check your BIOS settings for this option, align them with Intel’s guidelines, and rerun the tests to compare results.
I believe this might be the issue because the remaining concerns seem to point to a major problem with my setup, such as a severely bad case or improper motherboard installation leading to bad CPU-to-cooler contact.
Typically people suggest cleaning the dust filters, fans, and thermal paste—especially if you're running a system with lots of furry cats. You might already have done this. Few understand this BIOS configuration, and it's set by default. On my Asus Prime B760, I enabled it before watching that YouTube video. I'm curious whether it made a difference in lowering temperatures during another benchmark with the new BIOS settings.
In this scenario remove the front panel to allow the fans to operate more efficiently