I' don't say you're wrong, I just partially dissagree with your stance Memory bandwith is very important, however a smart and efficient design is much more important in my opinion and this is exactly what ati was aiming for. They tried to increase the calculation productivity while still staying in a certain size, energy consumption and cost frame. I do believe all the woes with the 5870 are mainly driver/software related. Why else would a pair of HD5770s which theoretically provide the same computational power constantly outperform the single 5870? They do use the same architecture and offer similar bandwith (2x76Gb/s), don't they? Edit: I based my asumptions on the Guru3d tests found http://www.guru3d.com/article/radeon-hd-5770-review-test/16 . The 5770 pair's advantage varies, sometimes going up to 25%, but on average they are about 7% faster. When you consider that we don't get a perfect 100% scaling in crossfire, this is indeed a noticable difference isn't it?