Intel '80387'
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An 68-pin FPU on a PGA-adapter so it will fit into sockets. > Read more
A rather old 387; made only one year after it was announced in 1987. It does not have a SX or DX identification because there was no 386SX/387SX at the time. All the early 386 computers use a 32-bit data bus and can be considered DX.
The 387 was a great improvement over the 80287. It could do more and could do it faster. > Read more