Hi I have a newer 5/1/2010 Dell Studio XPS 8100 1986nbc and I am looking to upgrade psu and vga card , but I have a few questions. I currently have a i7 860/8g 1333mhz ram/Radeon 5770/1tb WD cav. and a piece of crap 350w psu and I can't believe I didn't investigate the internals before purchase , but other than a single pci-e x16 slot the systems is decent. Anyway the psu has a rear mounted fan and the new psu should have the same correct? Also what are the things I need to do to be sure new psu is compatible or any recommended psu from people who have done what I trying to do. I plan to upgrade to a nvidia 460 or ATI 5850 and I wish I didn't have to upgrade psu but 350w is scary even with my current card VisionTek 5770 (not underclocked) that came with the pc. Any recommended psu that would be a easy upgrade would be great and thanks for any info/help!