The new 1GHz hypertransport link is natural evolution for VIA who debuted with an 800MHz 16/16bit down/up HT link. However for nVidia, it's a kneejerk reaction as they debuted with a cripled 600Mhz 16/8bit down/up HT link.

It's the 200MHz LDT bus with a 5x multiplier. Rumour has it that AMD is about to bless 1GHz HT links.