PCI bus
The following information is provided for a PCI bus.
PCI Bus Status
•MBytes/Sec—The average number of megabytes transferred on the selected PCI bus each second.
•PCI Utilization %—The PCI utilization for the selected PCI bus. A 32-bit PCI and 64-bit PCI can operate simultaneously on the same PCI bus. The utilization is primarily dependent on the MBytes/Sec rate and the negotiated PCI bus protocol:
•32-bit PCI—Operates at 33 MHz, resulting in a maximum throughput of 132 MB/s
•64-bit PCI—Operates at 33 MHz, resulting in a maximum throughput of 264 MB/s
•64-bit/50-MHz PCI-X—Provides a maximum throughput of 400 MB/s
•64-bit/66-MHz PCI or PCI-X—Provides a maximum throughput of 528 MB/s
•64-bit/100-MHz PCI-X—Provides a maximum throughput of 800 MB/s
•64-bit/133-MHz PCI-X—Provides a maximum throughput of 1064 MB/s
•PCI Express X1—Provides a maximum throughput of 500 MB/s
•PCI Express X2—Provides a maximum throughput of 1000 MB/s
•PCI Express X4—Provides a maximum throughput of 2 GB/s
•PCI Express X8—Provides a maximum throughput of 4 GB/s
•PCI Express X12—Provides a maximum throughput of 6 GB/s
•PCI Express X16—Provides a maximum throughput of 8 GB/s
PCI bus performance is evaluated using the Bus Utilization %.
NOTE: PMP does not accurately report the negotiated PCI bus protocol when unknown PCI devices with slower transfer rates than the controller are configured on the same bus.
PCI Bus Inventory
•PCI Support—Displays the supported and negotiated PCI protocol (bus and speed)
•PCI Devices—Lists the PCI bus slots and any I/O expansion boards installed in the slots
PCI bus 23
