6800 for $99?

Hey guys, I'm building a new rig and while I'm not that much of a gamer I would like it to be able to run Oblivion acceptably. While looking for a videocard I noticed newegg has a deal on a 6800 for $129 with a $30 mail-in rebate making it $99. I was looking for a card between $100-50 so this seems like a great deal. Should I jump on this or are there any other options I should consider first?

On a side note, any thoughts between these two processors?
Sempron 3100+ Palermo 800MHz HT 256KB L2 Cache Socket 754 $84
Sempron 64 3000+ Palermo 800MHz HT 128KB L2 Cache Socket 754 $86