PC Video Bus, AGP Slot Pinout Version 2.0

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The pin out table below provides the Pinout for the AGP bus slot on the personal computer. The pinouts listed account for version 2.0 of the specification. The table lists 132 pins [2 rows of 66 pins], but the Key which is listed is an absence of pins [space], both the Motherboard slot connector and AGP card have 124 pins. The table below lists pinouts for a 3.3 volt connector; 1x and 2x boards, a Universal connector; 1x, 2x, or 4x boards, and a 1.5 volt connector; 1x, 2x and 4x 1.5v boards.

Refer to this page for Version 3.0 of the AGP specification; 8x pinout at 1.5 volts, with new Key locations. Revision 3 of the AGP standard replaced this version [2.0], Revision 3 increased the speed of the AGP bus from 4x to 8x.

The AGP bus connector is 2.9 inches long. The number sign in the pinout table below indicates the signal’s asserted state occurs when it is at a low voltage. The absence of a # symbol indicates that the signal is asserted at a high voltage. The standard Printed Wiring board width is .062.

AGP [Accelerated Graphics Port] is a Point-to-Point [Chip-to-Chip] bus using 1.5 Volt or 3.3V signaling. The main use of the AGP bus is as a Local Video bus in IBM compatible Personal Computers [PCs]. The AGP bus is based on the PCI [Peripheral Component Interface] spec, using the PCI specification as an operational baseline. So the pinout is similar between the AGP and PCI buses. The AGP specification adds 20 additional signals not included in the PCI bus. The AGP specification defines the Protocol, Electrical and Mechanical aspects of the bus. The AGP bus is used as a local video bus in Personal Computers [PCs].

The Mechanical definitions include a connector and Add-in card [AGP Board]. The Board sizes and 1.5v and 3.3v connectors are also defined with in the spec. There are five connectors defined: AGP 3.3v, AGP 1.5v, AGP Universal, AGP Pro Universal, AGP Pro 3.3v, and AGP Pro 1.5v. PCI and AGP boards are not mechanically interchangeable.
Note: On the newest Motherboards the AGP Slot is being replaced by the PCI-Express Bus (which is not mechanically interchangeable with the AGP slot).

Back to the main Accelerated Graphics Port [AGP] Bus page. Additional computer bus descriptions and pinout information may be found by selecting the Buses icon below.


Engineering Design Key words: Accelerated Graphics Port Standard, Personal Computer Local Video Bus, PC, AGP Slot, AGP Pinouts, Pin Out, Pinout, pins Connector, Signal Names, 2row, Computer Bus, AGP Pro, AGP Universal, Interface based on the PCI bus Standard, PC Local video bus Specification, Spec, IBM Compatible Personal Computer Interface, Slot, IC, Physical Interface, Description, visual display devices, Edge Connector.

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