Gigabyte 5AA User Manual page 7

Pc / at compatible mainboard with pci / isa / agp bus

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5AA

1.7. What is AGP

The Accelerated Graphics Port (AGP) is a new port on the Host-To-PCI bridge

device that supports graphics display interface. The main purpose of the AGP port

is to provide fast access to system memory.

The AGP port can be used either as fast PCI port (32-bits at 66MHz vs. 32-bits at

33MHz) or as an AGP port which supports 2x data-rate, a read queue, and side

band addressing. When the 2x-data rate is used the port can transmit data at

533Mb/sec (66.6*2*4). The read-queue can be used to pipeline reads – removing the

effects of the reads-latency. Side band addressing can be used to transmit the data

address on a separate line in order to further speed the transaction.

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