ooo 256-bit bus, most likely will be the mid range product great performance matching the 7900's.
I think 8700GTS is going to be much better than any 7 series. It will be almost as good as 88000GTS
The article says that 8700GTS is going to have either 1800Mhz or 2000MHz (effective memory speed). If 8700GTS had 2000MHz then it will have same memory bandwidth as 8800GTS
2Ghz x 256Bit = 512Gb/s = 64GB/s
1.6GHz x 320Bit = 512Gb/s = 64GB/s
Clock speed of 8700GTS is still unknown thought.
But I think that 8700GTS is going to be a good overclocker because of the 65nm die shrink. 8700GTS is going to have new features like HDMI, PureVideo Gen 3 and PCI Express 2.0