Hi im just after a few opinions on my nexed graphics card. Iv got an Nvidia 6800GS and its just starting to struggle with the high end games E.G BF 2142. Im thinking of upgrading it although im not sure weather to buy a hole new graphics card or get another 6800GS to put in SLI. if i was going to get a new graphics card i was thinking around about the Nvidia 7 series top-end Eg 7800/7900 modles so what would be best SLI or new better one? Thanks for any ideas