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1 Your PC’s Performance Features
Installing Fast Peripherals on the PCI Bus
Installing Fast Peripherals on the PCI Bus
The HP Vectra XU PC provides six slots for accessory boards. Two of
these slots are already occupied by your advanced graphics controller
and LAN controller. The remaining four slots are available for installing
accessory boards and can be used to add extra peripheral devices to
your PC. These slots are of two different types.
The PCI Bus
Your PC uses the Peripheral Component Interconnect (PCI) bus as the
main channel for connecting peripheral devices. Your PC also provides
an Industry Standard Architecture (ISA) bus for backwards
compatibility with any ISA accessory boards you may need to use.
The difference in performance between the PCI bus and the ISA bus is
significant; the PCI bus can transfer data more than 16 times faster
than the ISA bus.
The PCI bus is 32-bits
wide and can transfer
data at up to 132 MB
per second
The ISA bus is 16-bits wide
and can transfer data at up to
8 MB per second
