Advanced Micro Devices Inc (AMD)

[sgolds]

calbiker, welcome to the board! It has been a while since I've seen a RMBS proponent. That should help to liven things up here!

Anyhow, I will have to disappoint your latency fantasy. First of all, PCI-Express is an I/O fabric and HyperTransport is an interprocessor connect fabric. They are complimentary, they do not conflict.

Second architectural point: AMD64 processors have an on-board memory controller, the memory does not have to touch HyperTransport at all. Very low latency. For multiprocessor configurations, some memory accesses are handled by a remote processor's memory controller over HT, very similar to traditional North Bridge access.

In no case does memory ever touch PCI-Express. PCI-Express simply replaces the existing PCI connection.

AMD has announced support of PCI-Express for I/O. It fits AMD's archtecture like a glove. We look forward to seeing this product!