Cyrix FasMath CX-83S87-25-JP

The 83S87 is the SX version of the Cyrix 83D87. Just as the 83D87 is the fastest 387-compatible coprocessor, the Cyrix 83S87 is the fastest of the 387SX compatible coprocessors, as well as providing the most accurate transcendental functions. 83S87 chips manufactured after 1991 use the internals of the Cyrix 387+, the successor to the original 83D87. The Cyrix 83S87 is ideally suited to be used with the Cyrix Cx486SLC CPU, a 486SX compatible CPU which is a replacement chip for the Intel 386SX CPU.