Will these work?

I'm in the process of building my first computer and have decided to run two 8800gt in SLI, I've already got 1 8800gt on it's way but whilst looking for another one to buy I came across this one on amazon: http://www.amazon.co.uk/XFX-GeForce-8800-Alpha-Dog/dp/B0013F1DC0/ref=sr_1_11?ie=UTF8&s=electronics&qid=1234263399&sr=8-11

My question is is it the same as a normal 8800gt but just a better version of it? Or is it a completely different card due to some minute difference? Would I still be able to run SLI with both of them?

Here's the one I've already bought: http://www.amazon.co.uk/XFX-Nvidia-8800GT-Express-Graphics/dp/B000XQHBEE/ref=sr_1_1?ie=UTF8&s=electronics&qid=1234263399&sr=8-1

Thanks in advance for your help:)

thanks alot:). Won't be ordering that one then.

shall i just get another of the one I already have then? or if there is anything else you can suggest then i'm all ears:)

Depends on how much you're willing to spend on a gpu. You could get another 8800 to save some money, but you could also get pretty much the same performance with a single gtx260 without messing with sli, and without having to worry about sli scaling.