Vintage Intel D8087-2 Math Coprocessor 5 MHz 40-Pin Ceramic DIP

Intel D8087-2 Vintage Coprocessor – Used, Clean Condition

The Intel D8087-2 is a 5 MHz math coprocessor in a 40-pin ceramic DIP package, designed to work alongside Intel’s 8086/8088 CPUs.

As Intel’s first floating-point coprocessor, the 8087 line marked a turning point in PC history, offloading heavy math operations from the main CPU. This D8087-2 variant carries the legacy of that early engineering, built in ceramic and ready for reuse, restoration, or collection.

Product Condition

Used, clean, and in good condition. Shows expected minor signs of handling but no damage that impacts function.

Product Overview

Intel launched the 8087 family to provide hardware floating-point performance for its 8086 and 8088 processors. The D8087-2 version runs at 5 MHz and comes in a robust 40-pin ceramic DIP. It was a cornerstone component for scientific, engineering, and early PC applications in the 1980s.

Key Features

• Intel D8087-2 math coprocessor
• 5 MHz clock speed
• 40-pin ceramic DIP package
• Designed for use with Intel 8086/8088 CPUs
• Performs floating-point arithmetic, exponential, and logarithmic functions
• Vintage construction with ceramic body
• Supports IEEE floating-point standard (early implementation)
• Compatible with classic PC and embedded platforms of the era

Applications

• Restoring vintage IBM PC and XT-class systems
• Educational demonstrations of early microprocessor technology
• Electronics hobby projects requiring floating-point math
• Historical or reference collections of Intel chips
• Replacement in legacy industrial control equipment
• Hands-on experimentation with 8086/8088 CPU systems

Frequently Asked Questions

What CPUs is the Intel D8087-2 compatible with?

It was designed to work alongside Intel 8086 and 8088 processors, providing hardware floating-point support.

What does the 5 MHz rating mean?

It specifies the maximum operating frequency, matching the speed of common 8086/8088 CPUs of its era.

What package type is this chip?

This version comes in a 40-pin ceramic dual in-line package (DIP), typical of early 1980s microprocessors.

Is this item tested?

The listing notes the item is used and in clean condition. Functional testing is not included unless specified separately.

Why is this coprocessor significant?

The 8087 was Intel’s first math coprocessor, accelerating floating-point performance and shaping software development in engineering, CAD, and scientific fields.

From the heyday of early PC architecture to today’s collector shelves, the Intel D8087-2 still carries the mark of innovation. Its next chapter belongs to you.