How to stop thermal shutdowns with the PA140 Peerless Assassin?
The game would just black-screen and reboot after about thirty minutes without any warning, and the sheer unpredictability of these crashes had my anxiety spiking. Monitoring revealed that the Thermalright PA140 Peerless Assassin couldn't move heat fast enough during sudden bursts, causing local CPU hotspots to hit 98-102℃, which triggered the hardware's emergency shutdown. I tried adding more exhaust fans to the top of the case, but that only dropped the ambient temp by 2℃ while the core peaks stayed above 95℃—a useless effort that didn't stop the crashing. I eventually went into the BIOS and changed the fan curve to a 'stepped' mode, forcing the fans to 90% speed the moment the CPU hit 75℃, and repasted the cooler with a high-conductivity compound. In OCCT stress tests, the peak temps dropped to 82-87℃, and the crashes stopped entirely. I did notice the fans oscillating wildly at the threshold at first, but adding a 3℃ hysteresis window fixed the noise. CPU temps now sit at 72-78℃ with fans at 1200-1500 RPM. Five hours of testing confirmed no more crashes, and RAM temps are steady at 52-58℃.
