[jorsoft03]

For a full size >$100 card you can still get an x1650 or hd2600 card for well under $100 plus rebates. Performance wise a 1650 card would probably be better as long as you don't mind the lack of hardware direct 10 (no biggy, as we've seen with Crysis). I'd check out these:
Newegg.com - HIS Hightech H165GTQT256GDDN-R Radeon X1650GT 256MB 128-bit GDDR3 PCI Express x16 CrossFire Supported Video Card - Retail
Newegg.com - EVGA 256-P2-N615-TX GeForce 7600GT 256MB 128-bit GDDR3 PCI Express x16 SLI Supported Video Card - Retail
The second one is a 7600gt which I recommend only form my brief experience with Linux that Nvidia is recognized as having better Linux support on the driver end of things. Heck of a price, too, for a card like that. I hadn't realized they'd gone down so much.