Similar system
kvbrock;
I have a similar new system except just one card (Radeon 5700HD). I also have Win 7 plus the i7 and 6Gig RAM. SH4 runs very smoothly. I'm not sure what my FPS is as I never checked. From that I would say that you should not be getting stutter even with one card.
I'm looking at getting a 2nd card and taking advantage of the XFire aspect but not if it causes more probs than solutions. I'll be watching this thread.
Can you 'disable' the XFire and use just one (or the other) card to see if there's any change or simply remove one card and see what happens? You may have tried this already but have you switched the cards around in the slots or used them one at a time to verify they're both working OK?
Any background programs which might be running?
Norton I found was a pig for that so that I ended up switching AV software (I was a big fan of Norton but found that it became quite intrusive to the point I got tired of it).
Just a couple of suggestions. As I said I don't have experience with XFire as yet.
Good luck.
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