jacobvandy wrote on Nov 29, 2022, 15:54:
Part of the reason they pump so much power into these things is that they want to make sure thousands of GPUs all perform to the same level

This isn't coffee roasting. They push the cards to the limit so that they win every benchmark with no regard for power usage. Nvidia got exactly what they wanted... every Youtuber and their mother is saying the 4090 is the best video card ever, and any price is justified because it's a unicorn product. The cooling solution to make this happen should be straight our of The Onion, but here we are. ¯\_(ツ)_/¯

That undervolt ratio is a no brainer if true. I've seen cards with a physical switch that changes between an efficiency/performance modes... do any 4090's have that?

An "easy" undervolt option would have to be so insignificant as to not even make much of a difference... Like with overclocking, if you want the bigger benefit then you have to manually adjust it as far as your own specific chip can handle. Part of the reason they pump so much power into these things is that they want to make sure thousands of GPUs all perform to the same level, despite the slight differences or imperfections between them. There's no way in hell they're going to test every one individually to ensure widespread stability of such a driver-level feature. But maybe a third-party partner would, so they can charge an extra $100 apiece for it to come out of the box already tweaked.

phinn wrote on Nov 29, 2022, 13:34:
Even on the RTX 30 series you can save 50W or more with a simple undervolt. Now it's even more so with RTX 40. I don't understand why Nvidia doesn't have a simple UV option in NVCP for this.

Probably because of the performance loss.
As digital jesus said, it pains him to have the top of the line cpu only to undervolt it and lose performance.
And yes, I know the performance loss is not big, but it’s still a loss.

Even on the RTX 30 series you can save 50W or more with a simple undervolt. Now it's even more so with RTX 40. I don't understand why Nvidia doesn't have a simple UV option in NVCP for this.

ZandarKoad wrote on Nov 29, 2022, 11:53:
Undervolting is the new overclocking. Has been for a while, actually. Prevents melting and greatly improves per watt performance.

Im quite the overclocker but undervolting my GPU is kind of scary for me. The whole power curve looks scary and I have no idea what Im doing. So I don't do it.

Undervolting is the new overclocking. Has been for a while, actually. Prevents melting and greatly improves per watt performance.