I've just covered the first box pic of a digitally switched P4 SLI motherboard so keeping with that theme, Tom's Hardware has recently taken a look at ASUS A8N SLI Premium, which does the same for AMD users.
The Premium version of Asus' A8N-SLI motherboard allows you to turn on or off SLI in software, rather than requiring you to open your system case. Will this new feature help alleviate one of the issues that some people have with SLI?
The review