IBM 4300

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The IBM 4300 series of computers were mid-range systems, various models of which were sold from 1979 through 1992. The systems were compatible with the System/370 architecture. They featured modest electrical and cooling requirements, and thus did not require a data center environment.

Each model number was available in various sub-models, such as the 4341 model 1 (or 4341-1) and 4341 model 2 (4341-2).

The 4381-13 through 4381-24 (announced in 1987) were entry-level machines for the 370/XA architecture. They were positioned between the IBM 9370 and IBM 3090 in performance at the time of announcement.

The 4381-3, 4381-14, 4381-24 and 4381-92 were dual-CPU models. Other models included 1, 2, 11, 12, 13, 21, 22, 23, 90 and 91.

Model Announced Withdrawn Max Memory Approximate Performance
4331 1979 1981 8MB 4 × 370/115
4341 1979 1986 16MB 3.2 × 370/158
4361 1983 1987 12MB 3 × 4331
4381 1983 1992 64MB 9 × 4341

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