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This is the old ChipList. It is here only for historical purposes.
You can find the latest ChipList at:

3.6 Intel i80187 NPX

NPX for Intel i80C186 CPU.

Intel i80387 NPX core/microcode.
Intel i80387 NPX instruction compatible.

12.5 MHz: 1989, CMOS, 675 mW.
16 MHz: 1989, CMOS, 780 mW.
20 MHz: CMOS.

Package:

Dropped in 1991.