AGP 2x refers to the initial variation of the Accelerated Graphics Port (AGP) interface. It was specified by Intel in 1997 (specification v1.0) to replace PCI in use with graphics cards. It operates on a 32-bit channel at 66 MHz, which is double pumped to 133 MHz, which provides a maximum transfer rate of 533MB/s, compared to AGP 1x maximum rate of 266MB/s.
