Quick question. Just put in a new EVGA GeForce GTC 650 Ti Boost in my computer. I have a 500W power source and most indications say I should have enough power to run my mediocre system. The graphics card is by far the highest end item in the machine. It's a Cyberpower bought 14 months ago. It used to have a GeForce GT 520 in it. The issue I am running into is that when the system is taxed at all, while playing game and never while not, the entire box just cuts off. This did happen once or twice before the graphics card switch but over the course of 14 months, I wasn't concerned. Now, it's happening roughly 5 to 10 minutes into any game I attempt to play. Defiance and Civ 5 being the two current games of choice but Star Command is doing it, too. I've been able to watch video, surf the net and play simple windowed game just fine without issue.
All that said, is it likely a connection loose, am I overheating or is it (as I feel) that I need more power?