Hi everyone, I know there are a lot of threads about PSUs, but I'd like to have a personal advic. So here's the problem, my previous psu (a sh***y brand) just blew up after a in-game crash (I had the same brand burning, but I managed to have it replaced thanks to warranty, a couple of years ago). I'd like to buy another one, but I don't want to spend a lot of money (since the pc is kind of overdated, and probably I won't make many upgrades, maybe a bit of OC). Here are my specs: Mobo Asus P5q-e Cpu Intel Core 2 Duo E8500 Radeon HD4870 (1gb gddr5) Ram 4x2gb WD Caviar Blue 1tb hdd According to extreme power psu calculator , I should go for a ~400W psu, but Ati suggets a min 500watt psu. Now, I would buy (in order of price): OCZ CoreXtream 500w Enermax ENP450 GT Enermax NAXN BASIC (500W) Corsair CX500 OCZ 500MXSP ModXtream pro 500W. What do you think?