sharky974 on 05 October 2009
The 9600 GSO will be almost twice as fast as the 4650 according to this review, http://www.techpowerup.com/reviews/HIS/HD_4650_iSilence/6.html
But you dont seem to care much about speed, plus I'm betting the 9800 uses more power, which is a concern with your power supply.
Either is a good choice but if you get the 4850 pay more like $50 for it like this one
http://www.newegg.com/product/product.aspx?Item=N82E16814102829&ATT=14-102-829&CMP=AFC-C8Junction
Myself I'd go with the GSO, but you cant go wrong.
