Is it possible to underclock a gpu to the point it doesnt need

>>54900430
No.

You can downclock it to reduce power consumption sometimes, but you'll always need that 6pin.

>>54900430
No, just don't even bother to waste time on this.

>>54900430
Back in the old days, i ran my 9800gtx+ without the connector till my power supply came in. It worked fine with significantly reduced performance, the card automatically detected the situation and ran in reduced power mode.

https://en.wikipedia.org/wiki/PCI_Express

...All sizes of ×16 cards are initially 25 W; like ×1 cards, half-height cards are limited to this number while full-height cards may increase their power after configuration. They can use up to 75 W (3.3 V × 3 A + 12 V × 5.5 A)...


So if you can get 75 W total from a 16x PCIE slot that limits what you could do and how.

But, I guess you'd start with a BIOS for the lowest level card you can find and go from there.

If you Bing image search GPU Power Consumption charts you can find several charts, "best" card I could find that'd fall within a decent range at peak 3D usage is a 7700 or so.

boom boom