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External 4-pin PWM fan no longer supported on ROG Strix 3080?

jupiter84
Level 7
Hi,

I've previously had a 1070 Ti ROG Strix and was really happy with the 2x 4-pin PWM external fan support with GPU Tweak II.

I've now upgraded to a 3080 ROG Strix, and connected my external fans to the 2x 4-pin PWM headers on the 3080. But the external fans only spin up during POST/boot, and as soon as POST has completed, my 3080 turns the external fans completely off. In GPU Tweak II, there are no options for external fan control like I had with my old 1070 Ti ROG Strix.

Has support for external fans been removed? Or is there something wrong with the software?

BIOS setting: Silent mode
BIOS version: 94.02.26.C0.10
Driver version: 27.21.14.5671
nVidia driver version: 456.71 WHQL
GPU Tweak II version: 2.2.1.0
Windows version: 10.0.18363.1139 x64
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