Does the 12GB 3080 model consume a lot of power?
Does the 12GB 3080 model consume a lot of power?
Undervolting doesn't always ensure reduced power usage overall. When aiming for a specific power consumption, power limits are what matter. Usually, I keep mine at 75% (which brings it down to 300W) while applying an undervolt. I’d need to check the curve I have, but I believe my voltage is similar to yours at that speed (my curve reaches about 2GHz).
The steep drop in clock speed compared to voltage changes explains why your speeds drop significantly when you set a power limit. If there’s no such reason, it might help to adjust the curve so you’re around 1700MHz at 800mV.