Intel 80386/80387 Memorabilia

Intel 386 "BORN A WINNER"

This is an early keychain with a die of 80386 microprocessor. The size of the die is about 10 mm x 10 mm, which closely matches 104 mm² - the die size of earlier 80386 processors manufactured on 1.5 micron CHMOS III process.

Intel Math CoProcessor 387^TM SPEED

Another early key chain, this time with Intel 387 die. Like the die in the keychain above, this die was also manufactured using 1.5 micron CHMOS III process. The size of the 80387 die was 7.5 mm x 7 mm, that is approximately two times smaller than the size of 80386 die.

386 The Computer Inside / 387 Intel Math CoProcessors (small)

This keychain has a 386 CPU die on one side, and 387 FPU die on the opposite side. Both dies are smaller than in two key chains above. 80386 is 6.5 mm x 6 mm, and 80387 is 5.5 mm x 5.5 mm. Apparently, they both were made on more modern 1 micron CHMOS IV process.

386 The Computer Inside / 387 Intel Math CoProcessors (large)

This keychain is a larger version of the key chain above, and it's slightly thicker. The size of this one is 2" x 2" (about 5 cm x 5 cm), the size of the keychain above is 4" x 4" (about 4 cm x 4 cm)

386 The Desktop Standard / 387 Math CoProcessors

This keychain also has two dies of the 80386 microprocessor and 80387 co-processor.

Intel RapidCAD^TM Engineering CoProcessor

Intel RapidCAD key chain. The front side includes a die of RapidCAD-1 chip on the left, and a die of RapidCAD-2 chip on the right. RapidCAD-2 is much smaller than other 80387 dies on this page. There is an easy explanation to this - the RapidCAD-2 includes only some error-handling logic, while the RapidCAD-1 included both processor and co-processor.

i386 Today's Choice / i486 Tomorrow's Vision

Another interesting keychain with dies of two microprocessors - 80386 and 80486DX. On the pictures you can see that 80486 is much bigger than the 80386. Even though the 80486DX has integrated co-processor, the 80486DX is probably twice as large as combined size of 80386 and 80387 dies. By the way, both dies presented on this key chain were manufactured using the same 1 micron CHMOS IV technology.