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Hybrid Memory Cube


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Definition: IBM XT


The second model of the IBM PC, the IBM XT was introduced in 1983 with the addition of a 10MB hard drive. The XT used the same 8088 CPU as the original PC but boosted the 16KB of RAM up to 128KB with a 256KB option. The list price of the XT with one floppy disk and maximum RAM was $4,395. See XT class and IBM PC.