Rawn Shah writes in SunWorld . . .

“System bus technologies are beginning to reach their limits in terms of speed. Common PCI buses can only support up to 133 Mbps across all PCI slots, and even with the 64-bit, 66 MHz buses available in high-end PC servers, 566 Mbps of shared bandwidth is the most a user can hope for. To counter this, a new standard based on switched serial links to device groups and devices is currently in development. Called InfiniBand, the standard is actually a merged proposal of two earlier groups: Next Generation I/O (NGIO) led by Intel, Microsoft, and Sun; and Future I/O, supported by Compaq, IBM, and Hewlett-Packard.”

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