I finally sorted out my SLI GTX 670's last week and Ive got to say i'm impressed 
Ive only ever gone crossfire before with dual 4850's when Crysis/Stalker was released and the stuttering did my head in.
I already had a Giga Winforce 3X but bought one of the KFA2 cards with external blower (when they were on offer the other week) to go in the lower slot but it just would not boot in that configuration.
I tried it in the top slot but it was hitting 80c+in no time at all and with the fan at 80% and it sounded like a hoover.
So i returned that and got another windforce 3X and its all running sweet. Not seen any stuttering as of yet.
I had to try crysis again and runs 80 fps with everything on. Seems like a new game with it running buttery smooth.
Ive been holding off playing metro 2033 until I can in its full glory (DX11) and now I can and it is 90% of the time above 60 with the rare dip into the 40's. Awesome atmosphere in that.
The top card never goes above 75c while the bottom card is around 65c, the only problem Im seeing after a long playgin sesh is my case is gettign very warm and starting to heat my cpu water cooling. I thought my MM u2-ufo with its many fans would keep it cool but It could do with another extractor fan near the cards. I may need to see if there is any pci bracket fans.
Another small issue Ive noticed but havent spent much time with is overclocking. Ive only used PrecisionX and eveytyime I have over clocked my scores go down in Heaven even though the cards arnt getting hot enough to throttle.
Happy enough on stock though for now.
Ive only ever gone crossfire before with dual 4850's when Crysis/Stalker was released and the stuttering did my head in.
I already had a Giga Winforce 3X but bought one of the KFA2 cards with external blower (when they were on offer the other week) to go in the lower slot but it just would not boot in that configuration.
I tried it in the top slot but it was hitting 80c+in no time at all and with the fan at 80% and it sounded like a hoover.
So i returned that and got another windforce 3X and its all running sweet. Not seen any stuttering as of yet.
I had to try crysis again and runs 80 fps with everything on. Seems like a new game with it running buttery smooth.
Ive been holding off playing metro 2033 until I can in its full glory (DX11) and now I can and it is 90% of the time above 60 with the rare dip into the 40's. Awesome atmosphere in that.
The top card never goes above 75c while the bottom card is around 65c, the only problem Im seeing after a long playgin sesh is my case is gettign very warm and starting to heat my cpu water cooling. I thought my MM u2-ufo with its many fans would keep it cool but It could do with another extractor fan near the cards. I may need to see if there is any pci bracket fans.
Another small issue Ive noticed but havent spent much time with is overclocking. Ive only used PrecisionX and eveytyime I have over clocked my scores go down in Heaven even though the cards arnt getting hot enough to throttle.
Happy enough on stock though for now.