Intel(r) Pentium(r) II Processor Intel(r) Pentium(r) II Processor Product Overview

The PentiumŪ II processor at 450 MHz, Intel's high performance desktop processor, integrates the best attributes of the P6 microarchitecture processors—Dynamic Execution performance, a multi-transaction system bus, plus Intel’s MMX™ media enhancement technology. Pentium II processors are targeted for professionals, avid PC users, and PC gamers, or the Enthusiast/Professional desktop users. In addition, they are targeted for mainstream home and business users, or the Performance desktop PC market. The Pentium II processor also meets the needs of entry-level servers and workstations.

Discover how Pentium II processor features and benefits can enhance your computing experience:


The Intel Pentium II processors deliver excellent performance for all PC software and are fully compatible with existing Intel Architecture-based software. The latest Pentium II processor, at 450 MHz, extends processing power further by offering performance headroom for business media, communication and Internet capabilities. Software designed for Intel’s MMX technology unleashes the full multimedia capabilities of these processors including full-screen, full-motion video, enhanced color, and realistic graphics. The Pentium II processor brings excitement to your PC experience. Systems based on Pentium II processors also include the latest features to simplify system management and lower the total cost of ownership for large and small business environments. The PentiumŪ II processor offers great performance for today's and tomorrow's applications.

Product Highlights

Product Description

The Intel Pentium II processor family includes 233 MHz, 266 MHz, 300 MHz, 333 MHz, 350 MHz, 400 MHz, and now 450 MHz versions for desktops, workstations, and servers. All are binary compatible with previous generation Intel-Architecture processors. Pentium II processors provide Intel's highest level of desktop performance for applications running on advanced operating systems such as Windows* 95*, Windows* 98*, Windows NT*, and UNIX*. The innovative 0.25 manufacturing process enables these CPUs to include over 7.5 million transistors—resulting in more power in less space. The processor core is packaged in the Single Edge Contact (SEC) cartridge enabling ease of design and flexible motherboard architecture.

The Pentium II processor family’s significant performance improvement over previous Intel-Architecture processors is based on the seamless combination of the P6 microarchitecture and Intel MMX media enhancement technology. The result is higher software performance plus headroom for applications that take advantage of Intel MMX technology.

P6 Microarchitecture Dynamic Execution Technology

Multiple Branch Prediction: Predicts program execution through several branches, accelerating the flow of work to the processor.
Dataflow Analysis: Creates an optimized, reordered schedule of instructions by analyzing data dependencies between instructions.
Speculative Execution: Carries out instructions speculatively and based on this optimized schedule, ensures that the processor’s superscalar execution units remain busy, boosting overall performance.

IntelŪ MMX™ Media Enhancement Technology

Intel MMX technology includes new instructions and data types that allow applications to achieve a new level of performance. Intel MMX technology is designed as a set of basic, general-purpose integer instructions that are easily applied to the needs of a wide diversity of multimedia and communications applications. The highlights of the technology are:

  • Single Instruction, Multiple Data (SIMD) technique
  • 57 new instructions
  • Eight 64-bit wide MMX technology registers
  • Four new data types

Other Significant Features

Testing and Performance Monitoring Features

Performance Specifications

Performance Specifications