The M-880 Processor Group was a world-class general-purpose processor group. It was equipped with an advanced system architecture and was announced in June 1990. It employed ECL LSI with 12,000 gates/chip and a delay time of 70 picoseconds, and used 4 Mbit CMOS LSI in the main memory unit. With multiprocessor based design, Hitachi offered a system with greater expandability for the wide-area/composite system era.
The lineup was comprised of four models: the M-880/210 and M-880/220 2-way processor models, the M-880/310 3-way processor model and the M-880/420 4-way processor model. The entry model 210 had about 3 times the processing capacity of the M-680H, and the model 310 had about 2.5 times the processing capacity of the M-682H.
| 210 | 310 | 220 | 420 | |
|---|---|---|---|---|
| Number of instruction processors | 2 | 3 | 2 | 4 |
| Buffer memory capacity | 256KBx2 | 256KBx3 | 256KBx2 | 256KBx4 |
| Main memory capacity | 128-2,048MB | 256-2,048MB | ||
| Number of channels | 32-128 | 64-256 | ||
| Announcement date | June 1990 | |||
