Anand says the new Crossfire Sideport (wich is suposed to enable the GPUs to share memory) isn't enable in single RV770, and will be enable in the X2.
http://anandtech.com/video/showdoc.aspx?i=3341&p=9
And unlike the 3870X2, the new one has GDDR5 memory (probably faster than on normal 4870) and PCIe Gen2 interconnect.
Add binned, higher clocked GPUs and we have real competition to the GTX 280.
And I read somewhere the 4870X2 will have a full copper + heatpipe cooler, maybe with the fan in the middle, like the 7900GTX cooler.
I hope they bring back the "wind tunnel" blower design, like the X800/X1800 cooler.
BTW, I see a lot of CPU design influence here:
Originally Posted by doompc;
Particle's First Rule of Online Technical Discussion:
Rule 1A:
Rule 2:
Rule 2A:
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