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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. |
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Intel Math CoProcessor 387TM 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. |
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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. |
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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) |
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386 The Desktop Standard / 387 Math CoProcessors |
| This keychain also has two dies of the 80386 microprocessor and 80387
co-processor. |
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Intel RapidCADTM 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. |
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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. |
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