I may be talking from a very amatuer point of view, but i believe that sli is when you have two <a style='text-decoration: none; border-bottom: 3px double;' href="http://www.serverlogic3.com/lm/rtl3.asp?si=22&k=graphics%20cards" onmouseover="window.status='<a style='text-decoration: none; border-bottom: 3px double;' href="http://www.serverlogic3.com/lm/rtl3.asp?si=22&k=graphics%20cards" onmouseover="window.status='graphics cards'; return true;" onmouseout="window.status=''; return true;">graphics cards</a>'; return true;" onmouseout="window.status=''; return true;">graphics cards</a> doing the same job. Like a <a style='text-decoration: none; border-bottom: 3px double;' href="http://www.serverlogic3.com/lm/rtl3.asp?si=22&k=dual%20processor" onmouseover="window.status='<a style='text-decoration: none; border-bottom: 3px double;' href="http://www.serverlogic3.com/lm/rtl3.asp?si=22&k=dual%20processor" onmouseover="window.status='dual processor'; return true;" onmouseout="window.status=''; return true;">dual processor</a>'; return true;" onmouseout="window.status=''; return true;">dual processor</a> computer.
But if you want the best <a style='text-decoration: none; border-bottom: 3px double;' href="http://www.serverlogic3.com/lm/rtl3.asp?si=22&k=graphics%20card" onmouseover="window.status='<a style='text-decoration: none; border-bottom: 3px double;' href="http://www.serverlogic3.com/lm/rtl3.asp?si=22&k=graphics%20card" onmouseover="window.status='graphics card'; return true;" onmouseout="window.status=''; return true;">graphics card</a>'; return true;" onmouseout="window.status=''; return true;">graphics card</a> (in my opinion) you should get the "Gainward Goldsample 6800 Ultra" this supports sli and is phonemly quick, 525mhz Gpu, and 1250mhz <a style='text-decoration: none; border-bottom: 3px double;' href="http://www.serverlogic3.com/lm/rtl3.asp?si=22&k=ddr%20ram" onmouseover="window.status='<a style='text-decoration: none; border-bottom: 3px double;' href="http://www.serverlogic3.com/lm/rtl3.asp?si=22&k=ddr%20ram" onmouseover="window.status='ddr ram'; return true;" onmouseout="window.status=''; return true;">ddr ram</a>'; return true;" onmouseout="window.status=''; return true;">ddr ram</a>. The price of one of these is £250-300 ish, the best price i have found is :
http://www.overclockers.co.uk/acatalog/GeForce_6800_GT.html
Allthough this says its a GT the gainward goldsample is faster than a ultra!
Alex.