HD 3870 X2 review
All in all, it's a very solid offering for the price, so long as you can take the power consumption. Anand seemed very impressed with the card, and even said that they would forget that it was a dual GPU solution because the gains were consistent in all games and the card worked quite well. The only thing the X2 lost to (in this comparison) was a pair of 8800GTs in SLI (which costs more). The nice thing about this solution is that it brings XF performance to any board with a PCIe slot--it doesn't matter what chipset you use, and since the XF communication is handled on-card, drivers are less of an issue.
It took a little trickery, but it looks like AMD/ATI has a ultra high-end product again! Hooray for competition!
Give what you cannot keep to gain what you cannot lose.