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Wednesday, August 09, 2006

80386SX and DX Vintage Computer Manuals

80386SX and DX

In its day the 386 chip was a revolutionary change in computing which paved the way for later major upgrades in computing.


We owe much in our days of Pentium 4s to the early days of the 386 computers.


Compared to a 286, the 386 had a huge amount of addressable memory. The 386 came in two basic flavors – SX and DX – and in a whole range of speeds. The 386 SX was a bridge between the 16-bit and the 32 bit chips.


Higher clock speeds certainly boosted performance, but the most noticeable change was the move from 16 bit to 32 bit computing. When that occurred, performance was doubled immediately, since twice as much data could be moved and used. It is like grabbing twice as big a handful. The bigger the handful grabbed the more that can be moved at a time. Today this seems commonplace however at the time it was more than a major step leading to our current 32 bit and now 64 bit computers ( one more step we should be grateful for the 386 for leading us to ).

Vintage Computer Manuals



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