Fixing VRAM overheating on Manli RTX 5090 D v2?
It's honestly ridiculous that I spent this much on a 5090 only to deal with driver resets in Flight Sim—the thermal design is a joke. The GDDR7 on the Manli RTX 5090 D v2 has insane bandwidth, but at 4K Ultra textures, VRAM temps hit 95 - 105℃ after two hours, triggering the driver protection and crashing the game. I tried dropping the resolution to 2K, which lowered temps by 12℃, but the visual loss was huge—totally defeating the purpose of owning this hardware. I ended up using software to set a much more aggressive VRAM fan curve and capped the power limit at 90% in the BIOS to reduce the heat load. HWInfo now shows VRAM peaking at 82 - 88℃, and the crashes have stopped. I did get some coil whine when I first pushed the fans to the limit, but backing the peak speed off by 200 RPM quieted it down. Core temps are steady at 65 - 72℃. Backed up the fan profile, and the input response feels snappy again.
