AGP Bus - material

AGP Bus:-
- Accelerated Graphics Port (AGP) is an interface specification that enables

3-D graphics to display quickly on ordinary personal computers.
- AGP is designed to convey 3-D images much more quickly and smoothly.
- It is especially useful in conjunction with gaming, three-dimensional (3D) video,

and sophisticated scientific/engineering graphics programs.
- AGP offers high-speed data transfer to and from RAM, optimizing the use of memory

and minimizing the amount of memory necessary for high-performance graphics.
- AGP buses works at 66 MHz and it is 32-bit bus so it can produce
66 * 4 = 266 MBps
- While it provides data transmission of 32-bit in a single cycle it provides the above

results
- There are lots of variation in AGP bus available in which they vary according to the

data transmission speed and all variations are as follows:
2x speed: - 66 * 4 = 266 MBps in 1x speed so for 2x
It is 2 * 266 MBps = 533 MBps
4x speed: - 66 * 4 = 266 MBps in 1x speed so for 4x
It is 4 * 266 MBps = 1064 MBps (1 GBps)
8x speed: - 66 * 4 = 266 MBps in 1x speed so for 8x
It is 8 * 266 MBps = 2128 MBps (2.1 GBps)
16x speed: - 66 * 4 = 266 MBps in 1x speed so for 16x
It is 16 * 266 MBps = 4256 MBps (4.2 GBps)
- AGP has a couple important system requirements:
- The chipset must support AGP.
- The motherboard must be equipped with an AGP bus slot or must have an integrated

AGP graphics system.