[quote name='thehoweller']Ironically I've the same processor (I believe (can't remember specifically it has been 2 years since I built it)). However, I've the 9800GTX+ and I've forgotten if it will SLI with lower-end graphics cards. Could I use this in SLI, would it be advisable?[/QUOTE]
I'm about 95% sure you won't be able to SLI with anything other than another 9800GTX+. In fact, I 'think' you even have to use the same manufacturer, but I could be wrong.