Hd 3850 1gb

HD3850 1GB performs almost exactly as HD3850 512MB, because 256bit bus can't take the advantage of 1GB

I don't recommend crossfire since many games are not optimized for it. Just get one good GPU like GTS 512
 
HD3850 1GB performs almost exactly as HD3850 512MB, because 256bit bus can't take the advantage of 1GB

I don't recommend crossfire since many games are not optimized for it. Just get one good GPU like GTS 512

Agreed. Get yourself a 8800GTS 512mb, forget the crossfire/sli rubbish. Its a gimmick more often than not, especially at lower resolutions.
 
Should I get 2 HD3870 512mb? would be same compare of HD3870 2x 1GB?
I love my dual 3870's. Two 3870's seem to have a slight edge on a 3870X2. But the 3870X2 leaves room for upgrading if you own a crossfire motherboard.
Agreed. Get yourself a 8800GTS 512mb, forget the crossfire/sli rubbish. Its a gimmick more often than not, especially at lower resolutions.

Crossfire scales better than SLI. Its definitely not a "gimmick". I got nearly a 80-90% increase in performance from a single to dual cards. However, your right, you get the biggest improvements at larger resolutions.
 
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