riser cable with external power?

[zacbarker]

I have thought about all the advice that I have received and an idea popped into my head. a high end gpu with a external PSU rigged up. no power coming from the actual computer but from the external power supply that is only powering the GPU. Hmmmmmmm

[piemadd]

1 minute ago, zacbarker said:

I have thought about all the advice that I have received and an idea popped into my head. a high end gpu with a external PSU rigged up. no power coming from the actual computer but from the external power supply that is only powering the GPU. Hmmmmmmm

That's actually very possible. You can trick a PSU to boot and only power the GPU. You can do this by bridging a green and black wire on the 20+4 pin connector.

[zacbarker]

I was thinking just connecting the GPU to the MOBO with a riser and then connecting the PCI_e lead to the gpu

[Imakuni]

3 minutes ago, zacbarker said:

I was thinking just connecting the GPU to the MOBO with a riser and then connecting the PCI_e lead to the gpu

But the PCI slot, by itself, already provides 75w.

 

You'd have to Bios mod the card to not pull any wattage out of the mobo - that's doable, but I don't know if actually doing it would still make the GPU functional, or if it would cause an electrical problem, due to the card's design.

[zacbarker]

only 65w for the whole system with an external brick