The 80386 CPUs were an amazing technical achievement, and luckily for Intel stockholders, priced as such. Everyone wanted a 386, even if they couldn't afford one. The marketing folks at Intel found a way to sell more 386's without hurting the profitability of the original 80386. Reduce the data path external to the CPU, making for a less expensive system board, add a suffix to the label 80386, oh, SX will do, and now more people can buy an 80386. This worked so well; Intel will use this idea again later.
Only one thing was missing in the 80386. That was the ability to do floating-point math.
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