Originally posted by SOB
AH is my main concern now, but I'm sure I'll be playing other FPS and RTS games in the future. The board I'm buying supports SLI, so the plan is to buy another 6800GT in a couple of months. Actually, this is what I'm looking at...
http://www.newegg.com/product/product.asp?item=N82E16813188019
http://www.newegg.com/product/product.asp?item=N82E16814130085
and 2 gigs of DDR2 800
Krusty is right (for once

). The 8600GT is a pretty crippled card. The 8600 is a high number, and the higher the number the better the card (as a general rule of thumb). So a 7950 is the top of the line 7xxx series cards and the 7600s are a good mid range, while the 7300s were low range.
However, with the 8xxx series, the 8600 is more like a low end card (a 7300 as example from above).
Tomshardware has Video Card charts that show you how well a card does in certain games compared to other cards. Link available here:
http://www23.tomshardware.com/graphics_2007.html?modelx=33&model1=859&model2=854&chart=275As an example, the 8600 GT achieves 43 FPS in Battlefield 2. This is lower than a lot of the 'older' 7xxx cards. A 8800 GTS 320mb gets 102.2 FPS.
Now I know you were talking about going SLI. At first thought it sounds like a good idea. 2 cards = twice the performance. Not quite. 2 8600GT's in SLI would still not come close to a 8800 GTS 320mb. I'm not entirely sure AH supports SLI. Your power draw (from your power supply) would be greater as well. 1 8800 is more efficient than 2 8600s power wise. So you would need an even larger PSU to support the SLI.
The 680SLI is not a bad board. But I would look at the P35 chipset. They are faster, newer, and are about the same price.
My recommendations. If you want a Direct X 10 card. Don't settle for less than a 8800 GTS 320mb. If you don't care about Direct X 10, get a high end 7xxx card. Like a 7900GS or a ATI 1950XT.
So remember. 2 Low End Cards != 1 High end card.