In my experience nature scales worse on 4870s than it does on G92 cards when moving to multi-gpu setups and I suspect ATI will have a tough time coming close to the cap. I'll see if I can dig up my runs where I tested it. The situation could have changed and may be different subzero, I tested 8800 GT sli+173.67 vs 4870 512 CF+Cat 8.12(IIRC).
Would definitely like to see someone give it a shot with subzero 4870 CF though
Keep pushing it everyone
