Ye you should deffo get a Corsair VX 450 PSU, brillian PSU's, i got a VX 550w to power my X1950XT card, but i would deffo opt for the 4850 card, how much is your budget, can you afford £120? if so get this one http://scan.co.uk/Product.aspx?WebProductId=837911 - Its a 4850, 1GB Mem, you couldnt...