No SLI works ok as far as I can see at least there is an apprecible performance boost in other games without any issues. I have to confess to being a complete SLI skeptic. It was just that 8800GT's were pretty cheap and I had one already. My rig is starting to show its age (you'll agree) and this was it's last hurrah if it can give me another year or so. The whole thing is probably proc limited now. I have a nice Lian Li case so it'll be a new board etc at some point. I have to say it still plays FC2 fine and gaming rigs don't age as fast as they used to.