I just got this card. Power supply is sufficent enough with 12V 750W, it's just that this graphics card is stupid and a lot of people are complaining about the same crashes im expiriencing. Basically whenever I enter a intensive game like gta5 as soon as I get in the menu it just crashes. The only thing I can do is restart because my monitor says it's not connected to anything. I can't even enter a game. I want this fixed or i'm never ever buying a amd product ever.