I'm looking at the X800 GTO PCIe to go with my soon to be ordered:
2GB Corsair (512 x 4)
The HiS is $195 w/ a $50 mail in rebate.
Sapphire is $146. The rebate should make it a no brainer, but I still have to come up with the extra 50 out of pocket. I've read a bit about heat issues with the X800 with and w/o OCing. Haven't decided if I'll OC the vid yet, but I'm sure I'll at least play around with it.
Also considering the X1600 Pro 256MB in the $150 range. Same 12 pipes, but only 128 bit interface.
I haven't built a new PC in about 3 years, and haven't kept myself up to date. Any help or opinions would be greatly appreciated.
DO not touch the X1600. Its a poor midranged solution compared to that X800 or a 6800GS for that matter.
As for the OC'ing. The IceQ design is quite similar to the Silencer design.
My X800pro went from stock (475/900) to 535/1125 ---or something to that effect. I cant remember the exact frequencies, but it was very close to that.
So I wouldnt hesitate personally.
Nice setup overall....but like I said, try to stay away from midranged ATI cards that are x6 or 700 and the x13, 1600.