HEXUS.net continues its SLI coverage today. If you haven't read the first part yet - NVIDIA's SLI - An Introduction - then I suggest you do. The latest installment looks at cooling and powering your SLI rig, along with performance when using a pair of 6800GT's in SLI mode and also how SLI fares as an upgrade path. Check it out here. From the article: "When thinking about SLI, think about your entire platform, especially when you're considering it as an upgrade path. I'll cover all of that in more detail in due course, but if SLI is definitely something you want to persue, the key price points of your CPU and mainboard choice are arguably of higher priority than the graphics cards you'll be choosing, to help you get the most out of the technology as an upgrade platform.

Issues surround NVIDIA's SLI certification program, but on the whole, a pair of 6800 GTs in my mind are something well worth considering if you've got the money, or at least the money for a nice platform and a single board in the near future."