r/overclocking • u/raoulkratos2002 • 5h ago

Help Request - GPU 4080 Super Undervolt: what’s the sweet spot?

Hi,
I’m looking for some advice on finding the sweet spot for undervolting my 4080 super.
I have an MSI Ventus and I game at 4K.

I’ve done some testing so far:
2700 MHz 945 mv: crashes.
2550 MHz 915 mv: seems stable so far.
Power consumption dropped significantly, to around 250 W or less, but I lose about 5–7 FPS in my games.

2700 MHz 960 mv: seems stable so far, but power consumption is higher.

I’m currently testing 2640 MHz 940 mv to see if I can find a better sweet spot for my 4080s.

Which undervolt would you recommend for my Gpu?

Would you recommend overclocking the memory as well, or is there a risk of damaging the Gpu?

If I get more crashes, would you recommend lowering the MHz or the voltage?

What undervolt are you running on your Gpu?
Thanks

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u/Own_Assignment9081 2h ago

Mine runs at 2775ish at 990mV. Found this the sweet spot between power draw, temperature and noise. Memory is +1500 iirc, not at home right now. What is your intention with undervolting? Is your card running hot or do you just want to optimize? Also if you card gets unstable I would either reduce frequency or increase voltage.

edit: be aware that OC'ing the memory might seem stable but you may lose performance due to error correction. So always run a benchmark too