http://en.wikipedia.org/wiki/Direct_Media_Interface

It is a (perhaps modified) PCI-E x4 v1.1 interface
http://en.wikipedia.org/wiki/PCI_Express

In PCIe 1.x , each lane carries 250 MB/s.

As a point of reference, a single-lane PCIe card has nearly twice as much bandwidth as the most common PCI interface, a 32-bit 33MHz PCI bus (133 MB/s). A PCIe x4 slot has bandwidth comparable to the fastest version of PCI-X 1.0 (64-bit 133MHz.) An eight-lane slot has a transfer rate comparable to the fastest version of AGP.
A PCIe x4 slot has bandwidth comparable to the fastest version of PCI-X 1.0 (64-bit 133MHz.)

Lets see 64 bits is 8 bytes at 133mhz is 1GByte/sec DMI is full duplex so 2Gbyte/sec

http://en.wikipedia.org/wiki/HyperTransport

3.2GHz HT is 12.8GByte/sec

http://www.informit.com/articles/art...81869&seqNum=2

Hit "view table" and thats like a ton of buss speeds.

You are correct the DMI buss is 2000MByte/sec and a SATA2 max is 300MByte/sec. There is no way to saturate the DMI buss with SSD drives.


Well thanks for pointing that out.