Hello all, I have a Dell Optiplex 9020 that I'm turning into a low budget gaming rig. For those unfamiliar, Dell decided it'd be a good idea to use a proprietary PSU, with a non-standard motherboard power plug.

While I have a standard PSU that I could swap in, all of the Dell-to-ATX24 pin adapters I'm finding online are wonky as hell. However, there is an unused SATA plug, and I found a SATA Power-to-PCIe 6 Pin adapter. My GPU is a 5770, which doesn't draw much power.

While the stock Dell power supply has enough wattage to spare, I wonder how much wattage can be safely drawn from the SATA power plug? It's simple enough to do, I just don't want to fry or burn anything.