How to stop Fanxiang S790 4TB from overheating in Ghostwire: Tokyo?
Whenever I was speeding through the streets of Tokyo, the screen would start twitching in this really anxious way, especially in 4K. The Fanxiang S790 controller was hitting 75-82℃ under heavy reads, triggering the thermal throttle and spiking I/O response from 1ms to 25ms. I tried enabling power-saving mode in the BIOS, but that was a disaster—it didn't cool the drive and actually made the read speeds worse. A total nightmare. I eventually slapped on an M.2 heatsink with an active fan and changed the Windows write cache policy to 'Disable write-cache buffer flushing' to take the pressure off the controller. My monitoring panel showed the controller temp dropping to 52-58℃, with random reads stabilizing at 70-85MB/s. The fan was way too loud at first, but I manually tuned the fan curve to bring the noise down. Now the drive sits comfortably at 48-55℃ without any performance dips. The performance tools confirm the throttling is gone, and the input lag is finally non-existent.
