So you are debating on a motherboard that does or doesn't support SLI, is that correct? The option is nice, but I have only attempted dual cards once, it was crossfire w/ (2) 4870's, and I had huge heat issues. I don't believe I will try dual cards again. I sold them both and got a single 5870. There are alot of benefits to running (2) cards, especially if a 2nd card is relatively cheap. (2) GTX 260's run REALLY well. But you will still have to deal with the heat issues if there are any. If you have the extra cash for the SLI board, I'd say it's worth it just in case you want to venture down that path later. How often do you really replace your motherboard? I usually keep my core system, mobo, cpu, mem, for about 3 years before upgrading. That system usually sees a new video card each year, and I never know what it will be the next time. So the option is nice.