I am building a machine that will be primarily used to compress video, i.e. wmv, xvid, divx, mpeg2 formats. What is the best setup to get for speedy compression? I am considering a DFI nForce4 Ultra MB, 1 or 2 GB OCZ EL PC4000 VX Gold, Athlon 64 X2 4600+ Retail, XFX GeForce 6800GT 256-MB PCI...