Cyrix FasMath CX-83D87-33-GP – 33 MHz Math Coprocessor – Vintage 1989 FPU

PRODUCT DESCRIPTION

This is a Cyrix FasMath CX-83D87-33-GP, a 33 MHz floating-point unit (FPU) introduced in 1989 as a third-party alternative to Intel’s 80387 math coprocessor.

Cyrix designed the FasMath series to be faster and more efficient than Intel’s own FPUs, making them popular upgrades for systems based on 80386 processors. This specific model is the 33 MHz GP variant, intended for high-performance 386DX systems.

Today, the CX-83D87-33-GP is a sought-after collectible among vintage hardware enthusiasts due to its rarity and role in Cyrix’s early competition with Intel.

👉 Chip is untested, sold as a collector’s item.

SPECIFICATIONS

• Manufacturer: Cyrix

• Model: FasMath CX-83D87-33-GP

• Year: 1989

• Type: Floating Point Unit (Math Coprocessor)

• Clock Speed: 33 MHz

• Compatible with: Intel 80386DX CPUs

• Package: Ceramic PGA

• Condition: Used, untested, collectible

• Check out our vintage ceramic CPU collection here!