Hey guys, heres a quick run down of my situation, short hand for ease of reading A few nights ago I got my new Firestix in - spent roughly 3 hours trying to get them to run higher than 1100Mhz stably on my board - failed. Dropped my Vipers back in, set everything back to my usual settings (3.2Ghz, 1.32V after Vdroop (1.36 in bios) RAM at 1066Mhz, NB at 1.55V, SB at 1.20V, load line calibration enabled, speedstep and so on disabled) booted but my system was 'patchy' - as in I could run everything however the sound was distorted upon movements, such as page scrolling. I know this is usually caused by lack of voltage, however everything was set the same as it was a few hours previous when my rig was fine. Reinstalled Vista so I could use msn again. System was still patchy, however works fine with everything set to auto, speedstep etc diabled. Did an hour of changing a single setting - booting to windows, trying a game / music then rebooting, changing a single setting, etc etc. As soon as I changed FSB, core voltage, RAM speed, NB / SB voltage, any of those, my system got sketchy again. Booted COD:4 up, the game seemed to be running at around 10FPS, as if my GTX was being choked or something, everything was super laggy. So im now running at all auto settings in my bios, and its fine, however I want my overclocks back! So I pose the question - does this sounds like a PSU thats failing to you guys? I know it was a tall order asking a 500W PSU to deal with my specs, but it seemed fine up until yesterday. Has it finally hit its limit and started to die? I cant RMA it either as I have done a 24pin mod on it, fail. Could it be my motherboard? Or RAM? Any other suggestions? Either way its gonna cost me a fair bit haha . . . Looking at 600W+ PSU's now . . .