Last post similar to this was back in 2010 and I didn't want to necro that one. Got a XPS 420 with a Q6600, Win 7 64-bit and the original POS Radeon HD2400 256MB PCI-e card in it. Looking for opinions/suggestions on the fastest card that doesn't require any external power. Pretty sure just about anything current will be hella faster. Brand/Team doesn't really matter, price not so much either.