My computer is an Athlon II x4 645 system (Biostar A785G3 Mobo) with a GTX 260 (65nm, stock clocks), 500gb Hard Drive, 4gb 1600mhz G.Skill RipJaws @ 1.5v, 3 fans (+1 for CPU). I'm using a 1280x1024 monitor and only have one DVD drive. Note that I do not overclock and my processor is cooled by an Arctic Freezer 64 and stays close to room temperature, so the fans never ramp up harshly or anything. This is not a high-end system >_> I am using an Antec Earthwatts 380w power supply. Under Furmark+Prime95, my system uses just under 280w (measured from the outlet, not the PSU itself). The processor is undervolted to 1.2375v and barely uses 110w (peak) under prime95 by itself with integrated graphics. Normal gaming use drops me around 210w~, I idle about 100w. I have a friend that tells me my power supply is under excessive strain. He says that having the extra molex to 6-pin adapter is putting extra pressure on the 5v and 3.3v rails and that the power ripple over time will kill my computer parts. He's also trying to sell me a 600w power supply from a mutual friend for $40, but doesn't remember the brand or if it's 80+ efficiency branded. So my question is: Is there any merit to what he's saying? Is my power supply going to slowly kill my computer parts? Does a GTX 260 really use a whole lot of 5v and 3.3v power, starving other hardware components and causing ripple?