Powering a GPU using a different connector

[jman116]

The PSU I have access to is a 1000 Watt inside of a prebuilt workstation with 32 gigs of RAM and a Xeon with a second CPU supportable.

I'd love to toss in my Sapphire RX480 8 gig OC, but I can't without powering it, and there's no PCIe connector onboard. I could just use my old PSU to power the GPU but I'd like to adapt an available connector from the new PSU.

[Mira Yurizaki]

You can use any connector provided you convert it to a PCIe connector and the cable/rail you're drawing power from can support the maximum wattage that the PCIe connector can take.

[jman116]

1 hour ago, campy said:

If your 12v rail is up to the task, use molex.

black/yellow is the 12v, black/red is the 5v

 

How can I tell that the rail is up to the task? 

[jman116]

1 hour ago, wONKEyeYEs said:

Turns out I have 2 6 pin PCIe connectors... Should I get a single 6 pin to a single 8 pin converter , or a double 6 pin to a single 8 pin connector?