Intel has published the draft spec of the AGP 8x standard - an extension of the existing AGP 4x bus - including an outline of a 64-bit version supporting Itanic and its successors.
AGP 8x is unlikely to appear in products until 2003 at the earliest, but should offer bandwidths of over 2GB per second. Intel is seeking input from OEMs and chip companies to be incorporated into the final spec.
The bus is planned to operate at the current AGP 66MHz frequency, but will use a DDR-like technique to use the rising and falling edges of the clock signal. ®