IBM PS/2 Model 90 (9590)

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Processor:

Intel i486SX @ 25 MHz
Intel i486DX2 @ 50 MHz

Coprocessor:

optional i487SX @ 25 MHz/ integrated into CPU

Cache:8K internally in CPU

Memory:10 Mbytes (options range from 2M to 64M)

Bus:4 MCA slots (32 bit)

Interfaces (onboard):

Mouse, Keyboard
2 x Serial
1 x Parallel
Floppy (1.44M), allows attachment of up to 3(!) drives
XGA Graphics Adapter

The Model 90 was introduced as a high-end desktop Microchannel machine, and it sometimes referred to as a 'desktop server'. It can be described as a desktop version of the Model 95 (8595).

Manufacturer: IBM
Date: 1991

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