IBM Expected to Roll Out More Powerful PS/2 Models

International Business Machines Corp., addressing a weak spot in its year-old PS/2 line of computers, is expected today to introduce several new high-powered PS/2 models.

Analysts say the new models may include a desktop version of the Model 80, which is built around the Intel 80386 microprocessor and is available only in a cumbersome floor-mounted configuration.

The PS/2s have met a mixed response since their introduction in April, 1987. While the less expensive Model 30 and Model 50 are selling briskly, the Model 80 has run up against stiff competition from 80386-based machines from Compaq Computer Corp. and others.

IBM is also expected to boost the memory capacity and processing speed of the Model 80 and the Model 50, which is based on Intel’s older 80286 chip.

The expanded memory is essential for both machines so they can run OS/2, the new operating system designed to replace MS-DOS, the standard for IBM’s old PC line. OS/2 requires at least 1.5 megabytes of memory, more than most PS/2s now have.

IBM has scheduled a news conference today in New York.