Specifications

Computer Architecture and Maintenance (G-Scheme-2014)
PCI-Express, on the other hand, is brand-new, and is intended to replace AGP
in the desktop market and ultimately be the de-facto high-bandwidth peripheral bus
across all markets.
Hardware that benefits from 64-bit PCI include:
• High-performance graphics cards (PCI-Express only) in the 3D Gaming desktop
and graphic intensive workstation markets.
• U320 SCSI Controllers for high-speed hard disk access.
• Multi-port Serial ATA RAID Controllers for terabyte storage arrays.
• Gigabit Ethernet for high-speed networking.
• IEEE1394b ("Firewire 800") for ultra-high bandwidth peripherals, such as
external hard drives and DV camcorders.
Q.What’s wrong with PCI?
Ans.PCI, or Peripheral Component Interconnect was developed by Intel in 1992 and is
the local bus used in most PCs until know. PCI uses a shared bus topology to allow for
communication among the different devices on the bus i.e. the different PCI devices are
attached to the same bus, and share the bandwidth. This diagram explains the
situation.
It can run at clock speeds of 33 or 66 MHz. At 32 bits and 33 MHz, it will yield a
throughput rate of 133 MBps which is too slow to cater for the latest frame
grabbers especially as even this is shared with other PCI devices.
Q.Why is PCI-X an improvement?
Prepared By – Prof. Manoj.kavedia (9860174297 – 9324258878 ) (www.kavediasir.yolasite.com)
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