Intel A80387 16

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.