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Tilted Cat Head
Administrator
Location: Manhattan, NY
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Wikipedia sums it up easily:
Quote:
Versions of AGP
Intel released the first version of AGP; appropriately titled “AGP specification 1.0,” in 1997. It included both the 1x and 2x speeds. Specification 2.0 documented AGP 4X and 3.0 documented 8X. Available versions include:
AGP 1x
A 32-bit channel operating at 66 MHz resulting in a maximum data rate of 266 megabytes per second (MB/s), doubled from the 133 MB/s transfer rate of PCI bus 33 MHz / 32-bit; 3.3 V signaling.
AGP 2x
A 32-bit channel operating at 66 MHz double pumped to an effective 133 MHz resulting in a maximum data rate of 533 MB/s; signaling voltages the same as AGP 1x;
AGP 4x
A 32-bit channel operating at 66 MHz quad pumped to an effective 266 MHz resulting in a maximum data rate of 1066 MB/s (1 GB/s); 1.5 V signaling;
AGP 8x
A 32-bit channel operating at 66 MHz, strobing eight times per clock, delivering an effective 533 MHz resulting in a maximum data rate of 2133 MB/s (2 GB/s); 0.8 V signaling.
In addition, AGP Pro cards of various types exist. They require more power and are often longer than standard AGP cards (though they only connect to one AGP slot). These cards are usually used to accelerate professional computer-aided design applications employed in the fields of architecture, machining, engineering, simulations, and similar fields. The AGP Pro slot has a few extra pins which supply extra power to the graphics card. However, AGP Pro has not become widely accepted. Instead, modern desktop grade power-hungry video cards are equipped with a separate power source, either through a Molex or peripheral plug for additional power. Generally, there are two types of AGP Pro slots, regarding necessary power: 50 W or 110 W, with or without molex connector on the graphic card (although standard AGP slot is confined to 42 W of power through slot itself).
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I just purchased one of these and know a couple people who run the nVidia7800GS AGP
http://www.newegg.com/Product/Produc...82E16814130274
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