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From OCAU Wiki

The AGP (Accelerated Graphics Port) Slot is a slot designed to house a Video Card, as a Video Card will easily saturate the PCI Bus. This slot is becoming less used due to the introduction of PCI-E Slots, which provide much more bandwidth.

There are several types of AGP Slot. Some are compatible with each other whilst some are not.


AGP 8x

533MHz clock rate, 32 bytes/clock, Bandwidth: 2.1GB/s [0.8V signal swing}

AGP 4x

266MHz clock rate, 16 bytes/clock, Bandwidth: 1066MB/s [1.5V signal swing]

AGP 2x

133MHz clock rate, 8 bytes/clock, Bandwidth: 533MB/s [3.3V or 1.5V signal swing]

AGP 1x

66MHz clock rate, 8 bytes/clock, Bandwidth: 266MB/s [3.3V or 1.5V signal swing]

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