ChipGears

Reveal 387SX FPU 16-25MHz Advanced Math Coprocessor Cyrix 80387SX LCC68 RARE

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Specifications

Type CPU / Microprocessor
Manufacturer Reveal
Family Cyrix 387
Part number 387SX
Architecture x87
Frequency 16 MHz - 25 MHz
Socket LCC68

Item Condition

✅ Available now
Used.
Tested and working. Suitable for retro builds.
Description:
This is a Reveal-branded 387SX math coprocessor manufactured by Cyrix, designed to pair with Intel 80386SX CPUs. Reveal was primarily known in the 1990s for PC multimedia upgrade kits and peripherals, and occasionally rebranded chips from major manufacturers like Cyrix for bundling in system upgrades.
As a Cyrix-made 387SX, it enhances floating-point performance in 386SX systems, enabling smoother CAD, engineering and spreadsheet computations. This particular variant in PLCC package remains a fascinating collectible, linking two niche brands in vintage computing history.
✅ Rare Reveal 387SX math coprocessor
✅ Designed for 80386SX platforms
✅ Boosts FPU tasks for legacy software
✅ Perfect for collectors & restorers

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