Versions

Intel appear "AGP blueprint 1.0" in 1997.6 It included both the 1× and 2× speeds.3 Blueprint 2.0 accurate AGP 4×7 and 3.0 accurate 8×.8 Available versions include:

AGP and PCI: 32-bit buses operating at 66 and 33 MHz appropriately Blueprint Speed Pumping Rate (MB/s) Frequency (MHz) Voltage (V)

PCI - single 133 33 3.3

AGP 1.0 1× single 266 66 3.3

AGP 1.0 2× double 533 66 3.3

AGP 2.0 4× quad 1066 66 1.5

AGP 3.0 8× octuple 2133 66 0.8

AGP 3.5 * 8× octuple 2133 66 0.8

AGP adaptation 3.5 is alone about mentioned by Microsoft beneath Universal Accelerated Cartoon Anchorage (UAGP), which specifies binding supports of added registers already apparent alternative beneath AGP 3.0. Upgraded registers cover PCISTS, CAPPTR, NCAPID, AGPSTAT, AGPCMD, NISTAT, NICMD. New appropriate registers cover APBASELO, APBASEHI, AGPCTRL, APSIZE, NEPG, GARTLO, GARTHI.

There are assorted concrete interfaces (connectors); see Affinity section.

edit Official extensions

AGP cartoon agenda (Apple Macintosh)

AGP Pro cartoon card

edit AGP Pro

It is an official addendum for cards that appropriate added electrical power. It is a best aperture with added pins for that purpose. AGP Pro cards were usually workstation-class cards acclimated to advance able computer-aided architectonics applications active in the fields of architecture, machining, engineering, simulations, and agnate fields.

edit 64-bit AGP

A 64-bit approach was already proposed as an alternative accepted for AGP 3.0 in abstract documents,9 but it was alone in the final adaptation of the standard.

The accepted allows 64-bit alteration for AGP8× Reads, Writes, and Fast Writes; 32-bit alteration for PCI operations.

edit Unofficial variations

A amount of non-standard variations of the AGP interface accept been produced by manufacturers.

edit Centralized AGP interface

Ultra-AGP, Ultra-AGPII

It is an centralized AGP interface accepted acclimated by SiS for the arctic arch controllers with chip graphics. The aboriginal adaptation supports aforementioned bandwidth as AGP 8×, while Ultra-AGPII has best 3.2GB/s bandwidth.

edit PCI-based AGP ports

AGP Express

Not a accurate AGP interface, but allows an AGP agenda to be affiliated over the bequest PCI bus on a PCI Express motherboard. It is a technology acclimated on motherboards fabricated by ECS, advised to acquiesce an absolute AGP agenda to be acclimated in a new motherboard instead of acute a PCIe agenda to be acquired (since the addition of PCIe cartoon cards few motherboards accommodate AGP slots). An "AGP Express" aperture is basically a PCI aperture (with alert the electrical power) with an AGP connector. It offers astern affinity with AGP cards, but provides abridged support10 (some AGP cards do not plan with AGP Express) and bargain performance—the agenda is affected to use the aggregate PCI bus at its lower bandwidth, rather than accepting absolute use of the faster AGP.

AGI

The ASRock Cartoon Interface (AGI) is a proprietary alternative of the Accelerated Cartoon Anchorage (AGP) standard. Its purpose is to accommodate AGP-support for ASRock motherboards that use chipsets defective built-in AGP support. However, it is not absolutely accordant with AGP, and several video agenda chipsets are accepted not to be supported.

AGX

The EpoX Advanced Cartoon eXtended (AGX) is addition proprietary AGP alternative with the aforementioned advantages and disadvantages as AGI. User manuals acclaim not application AGP 8× ATI cards with AGX slots.

XGP

The Biostar Xtreme Cartoon Anchorage is addition AGP variant, aswell with the aforementioned advantages and disadvantages as AGI and AGX.

edit PCIe based AGP ports

AGR

The Advanced Cartoon Riser is a aberration of the AGP anchorage acclimated in some PCIe motherboards fabricated by MSI to action bound backwards affinity with AGP. It is, effectively, a adapted PCIe aperture acceptance for achievement commensurable to an AGP 4×/8× slot,11 but does not abutment all AGP cards; the architect appear a account of some cards and chipsets that plan with the adapted slot.12