Jdbye

I want this card. It's way out of my price range, but if I was rich I'd order 3 of them for SLI in a heartbeat. I don't think the price for top-tier hardware matches what you get though. In a year you can get something like this for a fraction of the price.

My own. Custom builds ensure flexibility. I get to pick a PSU I know can handle future upgrades, and I know exactly how many PCI slots, SATA ports etc. there are on the mainboard before I order it.

One possible cause could be overheating. Easily checked with SpeedFan or CoreTemp. I can't think of any reason why a poor connection in the DC jack would cause it to shutdown, not saying it's not possible though.