Advanced Micro Devices Inc (AMD)

[sgolds]

Paul, decaw, while it is true that coherence is not part of the standard, I will call attention to my assertion in that very same post that there is still 2 years work once Intel decided they wanted to use HyperTransport. (I even underlined that part!) There is nothing stopping a licensee from building coherent HyperTransport:

16.
Question:
What are coherent HyperTransport™ technology and non-coherent HyperTransport™ technology?

Answer:
Coherent HyperTransport™ technology is a application of HyperTransport™ technology used to link multiple processors together where memory coherence is required. An example of processors using HyperTransport™ coherency is the eighth-generation AMD OpteronTM processor. Non-coherent HyperTransport™ links are used to connect all other system components. The coherence layer is not part of the HyperTransport™ specification.

http://www.hypertransport.org/doc_faq.htm#q16