IBM 8087 floating-point unit

IBM Corporation didn't manufacture 8087 microprocessors. Instead, they re-branded Intel 8087 FPUs by stamping "IBM" name on them. There are three known IBM re-branded co-processors - C8087, C8087-3 and C8087-6.

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8087 family

IBM C8087

5 MHz
40-pin side-brazed ceramic DIP
"IBM" stamped on the chip
IBM C8087

IBM C8087-3

5 MHz
40-pin side-brazed ceramic DIP
"IBM" stamped on the chip
IBM C8087-3

IBM C8087-6

40-pin side-brazed ceramic DIP
"IBM" stamped on the chip
IBM C8087-6
(c) Copyright 2003 Gennadiy Shvets