What's the deal with HyperTransport?

[Chubbbs]

Is it just a marketing term for a loosly defined bus, or is there something else? I know that HT buses are two-way with 2,4,8,16,or 32 data paths in each direction working at a maximum of 1.6 Gbit/sec. However, AMD says stuff about it being specifically low latency and low power. What factors determine the latency of a bus connection and how has AMD reduced the latency of HT?

 

[Superdoopercooper]

HT is some sort of differential driving spec for a bus... I think it uses larger transistors pulling in both directions (can go positive or negative like a class AB amp)... so that the Tr and Tf are shorter than before....

But... I've only heard peopel talking about it when I was at my previous employer (who supported AMD)... so I can't really confirm if even the info above is accurate.