| Motherboard Categories |
|
|
| Sponsor |
|
|
| Links |
|
|
|
| July 27, 2007 |
| The AGP Variation |
|
A number of non-standard variations of the AGP interface have been produced by manufacturers.
- 64 bit AGP
A 64-bit channel. Used in high end professional graphic cards. It was once proposed as an optional standard for AGP 3.0 in draft documents, but was dropped in the final version of the standard.
- AGP Express
Not a true AGP interface, but rather a way to allow an AGP card to be connected over the legacy PCI bus on a PCI Express motherboard. It is a technology found on ECS motherboards, and is used as a selling point for AGP card owners who want a new motherboard but do not want to be forced to buy a PCIe graphics card as well (most new motherboards do not provide AGP slots, only PCIe slots). An "AGP Express" slot is basically a PCI slot (with the electrical power of two) in the AGP form factor. While it offers backward compatibility with AGP cards, its disadvantages include incomplete support (some AGP cards do not work with AGP Express) and reduced performance - the card is forced to use the shared PCI bus at its lower bandwidth, rather than having exclusive use of the faster AGP.
- AGI
The ASRock Graphics Interface (AGI) is a proprietary variant of the Accelerated Graphics Port (AGP) standard. Its purpose is to provide AGP-support for those of Asrock's motherboards that use chipsets lacking native AGP-support. However, it's not fully compatible and several videocard chipsets are known to not be supported. The performance and the quality of that interface is somewhat questionable.
- AGX
The EpoX Advanced Graphics eXtended (AGX) is also a proprietary variant of the Accelerated Graphics Port (AGP) standard. It shares the same problems with the AGI port explained above. User manuals even recommend not using AGP 8X ATI cards with AGX slots.
- Ultra-AGP, Ultra-AGPII
It is an internal AGP interface standard used by SiS for the north bridge controllers with integrated graphics. The original version supports same bandwidth as AGP 8x, while Ultra-AGPII has maximum 3.2GB/s bandwidth.
- XGP
The Biostar Xtreme Graphics Port is also a variant of the Accelerated Graphics Port (AGP) standard. It is similar to the two standards above, in that it supports AGP cards with chipsets that do not support AGP. Also like the above, it has support issues with many AGP cards.
- AGR
The Advanced Graphics Riser is a variation of the AGP port used in some PCIe motherboards to offer a limited backwards compatibility with AGP. It is, effectively, a modified PCI slot with no direct interconnection with the CPU or memory, and thus slower even compared to an AGP 1x slot. Its actual compatibility with AGP cards is also limited, while motherboard manufacturers usually publish a specific compatibility list.
Source : Wikipedia
Labels: Knowledge
|
|
|
| posted by admin |
|
|
|
|
| Search another Motherboard |
|
|
| Previous Post |
|
| Subscribe for daily update |
|
|
| Archives |
|
|
| Template by |
|
|
