Electronic Circuits and Projects Forum

I've been working on how to mount the internal parts of a PS3 (the "fat" one) into an old computer case to hopefully help keep it cooler, and because I want something to screw around with. I believe I've covered my bases on every issue of doing this besides the most major one, power. While the PS3 does have a power supply of its own naturally, I don't trust its reliability nor does it help keep things cool by laying directly on top of the PS3 motherboard in one big old ball of heat. What’s my solution? Drop the PS3 power supply and use a computer ATX power supply instead.

Though it'd be nice for the story to end there, it doesn't. Besides the issues of wiring the ATX power supply to attach to the PS3's connection points we also have the issue I've came here for, the issue of current. The PS3's original PS (power supply) is rated for an output of 23.5A at 12V. While I know I need an ATX PS that has a current rating of 23.5A or higher on its 12V rail for this to work, from my research the wires used for the 12v molex connectors in an ATX PS aren't rated to carry that much current (only around 11A each according to wikipedia [I know, shoot me]).

My proposed solution to this is to take 3 molex 12v lines from the ATX PS and run them together in parallel down to one single point to reach a new current capacity of the molex wires as a whole of around 33A (if the 11A rating I found is accurate). My question to you is, is that logical? Would that work, by one, reaching or exceeding the current requirement of the PS3, and two, satisfying that current requirement safely?

This all may sound entirely insane, and maybe it is, but I'd least like to know I tried to make it work. If all else fails I’ll just use the PS3’s PS or scrap the project entirely.


EDIT: Added a schematic of sorts to show how it may look.