While this improves PCI-X's peak theoretical bandwidth, its real-world sustained bandwidth gains are more modest.

DMA transfers over this bus occurs in packets of eight 128-bit words, achieving a peak usable bandwidth of 2 GB/s.

The buses also carry addresses and control signals in addition to data so only a percentage of the peak bandwidth can be realized (6.4 GB/s at 450 MHz).

The I/O port consisted of two unidirectional 32-bit links operating at 200 MHz, yielding a peak bandwidth of 3.2 GB/s.

When people talk about bus bandwidth this way what they're really describing is only one type of bandwidth: the bus's theoretical peak bandwidth.

Analysis of the attacks cited their peak bandwidth at under 17Mbit, a figure considered small when compared with other DDoS attacks.

Impressive that iPlayer has 5.5% of all European peak bandwidth, since it's a UK-only service!

The advertised peak bandwidth per user of 7 Mbit/s is 92.1 times the guaranteed bandwidth per user of 0.076 Mbit/s.

The peak bandwidth per link and direction is about 1 GB/s.

The slower, "longer" bus in the above diagram has a lower peak bandwidth than the faster bus, since it delivers fewer 8-byte blocks in a given period of time.