Technical Specification

IBM PS/2 model 50z with IBM keyboard and IBM PS/2 monitor

Introduction date: CPU: FPU: Clock Speed: Technology: Graphic: Bus: Operating System: Floppy: RAM: HDD: New Price:

2. April 1987 Intel A80286-10 Intel D80287-10 10 MHz IBM PS/2 Micro channel system, personal computer VGA 16 Bit (4x MCA Socket) IBM DOS vers. 5.0 3 1/2 "  1,44 MB 2048 KB 60 MB ESDI IBM WD 387 3595,- USD (1987)

History

The IBM Model 50 was the only 286 desktop Micro channel computer that was ever made by IBM. The processor is clocked at 10 MHz and this frequency gave the bus its standard operating frequency. The bus itself was definitely a performance enhancement compared to the ISA bus. The Model 50 is one of the few PS/2 systems where memory cards are not slower than on-board memory. The difference between the original Model 50 and the 50z is a faster 60 MB ESDI HDD, a modified memory interface from one to zero wait states (that's what the "Z" stands for) and a smaller main board because of the higher chip integration. Beside the revolutionary bus the mechanical design was also different from any other personal computers before. There are no wires and all components can be removed and inserted without any tools. Source: http://john.ccac.rwth-aachen.de:8000/alf/ps2_50z/

IBM PS/2 Model 50 with original IBM "clicky" keyboard	Clear design without any wires.

Main board with power supply

The brain of the Model 50Z, only earlier systems used the ceramic 286,

Triple 6-Bit Digital-to-Analog Converter - Color Look-up Table, and video memory.

HDD 60 MB ESDI IBM WD 387

Norton Sys-Info CPU Benchmark

Good old times, Prince Of Persia, still a very nice  game.

Helpfully Links: here you can download all PS/2 reference disc's here you can find a lot of technical info's about the model 50