Modified: May 15, 2005, 8:22 pm
Manufacturer:CHIPS & Technologies
Data Code:??
Architecture:80 bit FPU
Used in:386 Sytems
Description:Produced by Chips & Technologies, this was the
latest entry into the 387-compatible marketplace.
Originally announced in October, 1991, it had
apparently not been available to end-users before
the third quarter of 1992. The product was
discontinued after only a few month since C&T
stopped all work on their CPU and coprocessor

Compatibility with Intel products is very good,
even for the more arcane features of the 387DX
and comparable to the coprocessors from Cyrix.
Overall, accuracy of the transcendentals is
slightly better than on the Intel 387DX.

The C&T 38700DX showed performance at about 90-
100% the level of the Cyrix 83D87, which is the
387 clone with the highest performance. For
floating-point-intensive benchmarks, the C&T
38700DX provides up to 50% more computational
performance than the Intel 387DX. However, as
with all other 387 compatible coprocessors, the
speed advantage over the Intel 387DX is far less
significant in real applications.

The SuperMATH 38700DX is implemented in 1.2
micron CMOS with on-chip power management, which
makes for low power consumption. The 38700DX is
packaged in a 68-pin ceramic PGA and available in
speeds of 16, 20, 25, 33, and 40 MHz.