Main memory bandwidth

3200 MB/s

3200 MB/s

200 MHz

NUMAlink 3 channel bandwidth

3.2 GB/s (full-duplex)
1.6 GB/s each direction

1420 MB/s each direction

800 MHz

Xtown2 channel bandwidth

2.4 GB/s (full-duplex)
1.2 GB/s each direction

~ 1066 MB/s half duplex
~ 1744 MB/s full-duplex
~ 872 MB/s each direction

600 MHz

Xtown channel bandwidth

1.6 GB/s (full-duplex)
800 MB/s each direction

~700 MB/s half duplex
1120 MBs/ full-duplex
~560 MB/s each direction

400 MHz

PCI channel bandwidth

128 MB/s in 32-bit mode
256 MB/s in 64-bit mode

N/A

33 MHz