[i was wondering would amd radeon hd 7640g graphics run well on ultra in sl?]

Second Life hasnt updated their Graphics card requirements in years

[What Nvidia Cards are supported other than what is listed for windows based system]

HI, my system is 1 yr old it was custom built through HP. i had the Nvidia GT 220 installed before i had looked to see what was required. The cards taht are supported you cant find or at least i cant find them oh wait. BFG has the GTX 295 through Amazon.com wanting $400 brand new. what other cards are supported that they dont have listed.

The issues im having is severe lag which just started a few months ago and my vid drivers crashing, sometiems they recover and other times they wont and i get kicked out of sl, when that happens sometims i can get back into sl and other times i cant. 

Please help!, i have also raised my bandwidth to max as well as cache, and i have lowered my resolution for my monitor.  im still lagging  and my vid drivers are still crashing i need better card so if someone can please tell me what Nvidia cad witl work withoug downgrading i really would appreciate it

Jan