This is what I have purchased yet to put toghter till i get video cards.
AMD Phenom II X2 550 Black Edition Callisto 3.1GHz Socket AM3 80W Dual-Core Processor Model
ASUS M4A79T Deluxe AM3 DDR3 AMD 790FX ATX AMD Motherboard
WD 1TB HD
Gskil DDR3 1600 (PC3 12800) 4GB Dual Channel Kit
Apevia Warlock 750W Power Supply
and an Xclio Super Case ATX full Case 22.5'' x 8.1'' x 20.5'' (DxWxH)
And Im thinking of getting an Aquagate Max for Liquid Cooling.
Now Im looking for the best possible Video Cards for this system.
Suggestions? Its for Gaming
Get the 4890.
Good choice on the MB, too, it's one of the few where dual card slots are placed a sensible distance apart!
You might want to reconsider the PSU, though. Apevia are not known as a top quality builder.
If you plan on CF later, or even now, I' siggest 700-800W from OCZ, Antec, Corsair, Pc Power and Cooling or Silverstone, but check the one you select has the correct number of PCI-E connectors. For a single card, you'll need no more than 500-550W from any of those manufacturers, onve again, provided it has enough PCI-E connectors.
@ Nvv: The PSU you linked to has only 2 PCI-E connectors, not enough for Crossfire and its output (and cost) are excessive for a single card configuration.
Adaptors exist allowing you to draw power from Molex connectors, but it is not a good idea, particularly with a card that draws as much power as a HD4890.
Most of the cards of the type you have linked to (reference cooler) are much the same If you like HIS, then get it, nobody else is making them any better
I say two 4870 1GBs. I assume you are going to overclock your CPU. At it's stock speed it will be a limiting factor and thus you really won't get a benefit over spending less and getting two 4850 1GBs instead.