Originally posted by: mechBgon
Since the 800Mb/sec (400Mb/sec in each direction) is what nVidia claims for nForce2 as well, it seems reasonable to guess that 200MHz is the Hypertransport bus's native operating frequency.
nForce/nForce2 HyperTransport is 400 MHz DDR x 8 bit wide. This has nothing to do with the FSB to the CPU.
Also, nForce/nForce2 has asynchronous operation between PCI/AGP/FSB. This means they are all set independently. FSB can be adjusted to anything you want in BIOS (100-200+ depending on board), AGP can be set to anything you want in BIOS (66 MHz for example), but PCI is not adjustable via BIOS, it is always 33 MHz.