Even the mainboard’s battery still has over 3V. Specs as I can tell are a single 2.8Ghz QC Xeon, aforementioned dead GPU and good RAM, the mainboard appears to be working perfectly, and we’ll see about the optical drives as I get it to boot. Power Supply checks out, fans all spin up, RAM riser LEDs all go blinkers blink at power on. The verdict is that the OEM 8800GT graphics card is shot, and that there are four good chunks of 1TB spinning rust in the sleds, and 4GB of DDR 667 EC-RAM. Tonight I had the energy to take apart the machine for testing.
With it I obtained the original box and keyboard/mouse combo. It lived in a climate controlled environment since being deployed in ‘08 though the business was shuttered for three years. The MP that I’m working on is a pull from a small audio production business. Gonna just drop this topic here for now while I’m waiting on parts to roll in as I’ve always wanted one of these machines but could never justify the expense.