IBM System/360 Model 22
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The IBM System/360 Model 22 was an IBM mainframe from the System/360 line.
History
The Model 22 was a cut-down (economy) version of the Model 30 computer, aimed at bolstering the low end of the range.
The 360/22 was announced less than a year after the June 22, 1970 withdrawal of the 360/30, and it lasted six and a half years, from April 7, 1971, to October 7, 1977.
Comparisons
| Model | Announced | Withdrawn | Scientific performance (kIPS) | Commercial performance (kIPS) | CPU Bandwidth (MB/sec) | Memory (model) |
|---|---|---|---|---|---|---|
| 22 | 1971 | 1977 | 10 | 28 | 1.3 | 24, 32 |
| 25 | 1968 | 1977 | 9.7 | 25 | 1.1 | 16, 24, 32, 48 |
| 30 | 1964 | 1970 | 10.2 | 29 | 1.3 | 8 (C30), 16 (D30), 24 (DC30), 32 (E30), 64 (F30) |
| 40 | 1964 | 1970 | 40 | 75 | 3.2 | 16 (D40), 32 (E40), 64 (F40), 128 (G40), 256 (H40) |
Models
Only two models were offered: 24K or 32K of memory.