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AGP - (Accelerated Graphics Port)
A high-speed graphics expansion bus that directly connects the display adapter and system memory. AGP operates independent of the PCI bus and normally runs at 66MHz, which is twice that of PCI at 33MHz. The difference though is not the AGP's clock speed, but how many transfers can be made during a cycle. AGP 1x makes a single transfer per cycle for a maximum data-transfer rate of 266 megabytes per second (266MB/sec) while AGP 2x makes two transfer per cycle (533MB/sec) and AGP 4x makes four (1.06GB/sec). This compares to the 132MB/sec maximum data-transfer rate of the PCI bus.
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