Hi All,I'm doing a major overhaul of my current FSX rig and wondering if I need to upgrade my PSU as well. Currently, I have a 550W Ultra X2 modular power supply and it hasn't given me any problems in 4 years of use.My current rig:Core2 Duo E6750 OC'd @3.2 GHz, Abit IP35 Pro mobo, 4GB DDR2 PC6400 RAM, eVGA GTX 470 1280MB GPU, 2x 250GB WD hdds in RAID-0, Arctic Cooling Freezer 7 Pro CPU CoolerMy proposed new rig:i5 2500K OC'd (hopefully) to 4.5-5.0GHz, Asus P8P67 Pro mobo, 8GB DDR3 1600 RAM, eVGA GTX 470 1280MB GPU, Hitachi 2TB 7200RPM HDD, XIGMATEK LOKI SD963 92mm HYPRO Bearing CPU CoolerSo my proposed new computer would use a more power-hungry processor (95w for the 2500K vs 65w for the E6750), but I would only have one HDD instead of two, so there would be some power savings there. I'd imagine the other components would draw about the same amount of power. What are your thoughts?Cheers,Scott

408w in the 12V rails... probably borderline if you overclock your GTX470 and CPU

Hi Scott,With any PSU maximum output declines over time, some say several percentage points a year. I don't know, but your PSU is 4 years old so it has degraded somewhat and should perhaps be replaced anyway, to be on the safe side. Combined with an increase in power requirement with your new components, continued use of your PSU simply is on the wrong side of risky. Nothing can destroy a computer faster than a PSU that dramatically fails, save a double barreled shotgun. You should look for a well branded 750W or more to allow for an eventual decline of capacity and any possible future increase of your demand. Best to err on the side of caution.Happy New Year.Kind regards,

I'd say it would work (considering most people overestimate their required PSU ability, even me lol), but I'd want to know how many amps are on the 12v rail?For what its worth, I've got a 750w seasonic gold. It's got a lot of amperage on the 12v rail -60A I believe. Overkill. But you want whatever your GTX470 needs. I'd guess it would be 30A? Maybe 35A?Anyway, I plugged in my kill-a-watt unit to my PC and with a graphics heavy program like 3dMark11 benchmark it only needed around 360w @ peak. I also ran IBT and OCCT to run the CPU all the way up and that load was around 260w. And that's the entire PC, monitor, kb, etc etc. Only the printer was not plugged in.

Hey thanks for the advise fellas, I'll start looking at some new PSUs then just to play it safe.-Scott