IBM PS/2 Note N33Sx Type 8533 (before the Thinkpads)

Year: 1991

Initial Price: $2,990, $5713 in 2020


The Personal System/2 or PS/2 was IBM‘s third generation of personal computers released in 1987. The PS/2 line was created by IBM in an attempt to recapture control of the PC market by introducing an advanced yet proprietary architecture. IBM‘s considerable market presence plus the reliability of the PS/2 ensured that the systems would sell in relatively large numbers, especially to large businesses. However the other major manufacturers balked at IBM‘s licensing terms to develop and sell compatible hardware, particularly as the demanded royalties were on a per machine basis. Also the evolving Wintel architecture was seeing a period of dramatic reductions in price, and so these developments prevented the PS/2 from returning control of the PC market to IBM.

The N33 was IBM‘s first notebook-format computer from year 1991, Model 8533, 386SX)

It was originally a machine developed by IBM Japan for domestic markets. After the arch-rival Compaq brought the E-Lite 386 laptop seriesIBM was forced to bring out a counter-product.

Manufacturer IBM (International Business Machines ) (USA) Type Laptop
Production start (mm-yyyy) 1991 Production end (mm-yyyy) 1992
RAM 2-6Mb    
CPU 80386Sx – 12 Mhz    
Operating System IBM DOS 3.3; Win 3.0 and higher    
Text (Cols x Rows) 80 x 25    
Graphics LCD 9,5 inch; 640/480/16 grey    
Storage memory FDD 1,44Mb 3,5 inch; Hd 40 mB    
Serial port RS232 Parallel port Centronics
Others port External FD; VGA; PS/2 Mouse    
Original price 2990$    
Configurations Keyboard 85 Keys; NiCad Battery; External Power Supply; Numeric keypad provided

2 thoughts on “IBM PS/2 Note N33Sx Type 8533 (before the Thinkpads)”

  1. Hi, i have IBM PS/2 note laptop, model N33 SX. Can you Tell me the real value to this day? Thank you in advance for your reaction.
    Best Regards,
    Ondrej Nemec

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