Do NOT get the GeForce 8500, regardless of whether it's the 512meg or 256meg model. Seriously now, don't do it! The card simply has too many performance shortcomings to recommend and the extra memory does nothing to improve its performance.

If ~$100 is your target price I strongly recommend you consider a GeForce 8600 GT with 256megs.

EVGA is a very reputable brand and Newegg offers their basic 8600GT 256meg model for $95 after $20 rebate...

http://www.newegg.com/Product/Produc...82E16814130085

If you want a bit more horsepower for a bit more cash consider this 256meg model by XFX; $120 after $20 rebate. I own this card and it's great when coupled with my E6550 Core 2 Duo. XFX overclocked it almost to 8600 GTS levels but not so much that it requires an external power plug...

http://www.newegg.com/Product/Produc...82E16814150229