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The Tandy 2000 was a personal computer introduced by Radio Shack in late 1983 which used the 8 MHz Intel 80186 microprocessor. By comparison the IBM PC XT (introduced in March 1983) used the older 4.7 MHz 8088 processor and the IBM PC AT (introduced in 1984) would later use the newer 6 MHz Intel 80286. Due to the more efficient design of the 80186 the Tandy 2000 ran significantly faster than other PC compatibles on the market and slightly faster than the PC AT.