"It's an older model, but it checks out"

EMACS 600W server PSU by Zippy

!!Note!! this is not a standard ATX computer power supply shape.  Please check dimensions to determine if this will fit your case before purchasing.

These were removed 3U API (American ProImage) server chassis. I don't have a PSU stress tester, but these all boot up and run fine for an i7 + Quadro configuration.

Used parts from secondhand servers. I also have Motherboard+CPU combos and Quadro+sync GPUs -- see my other listings.