Processors
Intel® Pentium® II Xeon® Processor
Introduction and overview

End of Interactive Support
Intel is announcing the end of interactive support for the Pentium® II Xeon® processors. See the End of Interactive Support Announcement for details.

The Pentium® II Xeon® processor is available at 400 and 450 MHz in a new family of branded Intel processors specifically designed to meet the demands of mid-range and higher servers and workstations. To meet these demands, the Pentium II Xeon processor combines several premium characteristics: the architectural compatibility of previous Intel microprocessor generations; the Dynamic Execution and Dual Independent Bus architecture of the P6 microarchitecture found in the Pentium® II processor; and several new features designed to make this processor the right choice for powerful workstations, advanced server management and business-critical applications.

The Pentium II Xeon processor at 400 MHz is available in 512K and 1 MB L2 cache options, and the Pentium II Xeon processor at 450 MHz is available in 512K, 1 MB, and 2 MB L2 cache options.

The Pentium II Xeon processor improves upon the Pentium Pro processor by adding MMX™ technology for 3-D compute-intensive applications, and by utilizing the S.E.C. (Single Edge Contact) cartridge package technology first introduced on the Pentium II processor.

Like the Pentium Pro processor, level 2 cache communication occurs at the full processor core speed.

A significant feature of the Pentium II Xeon processor, from a system perspective, is the built-in direct multiprocessing support. The Pentium II Xeon processor supports both uniprocessor and multiprocessor implementations with up to four processors on each local processor bus, or system bus.

The Pentium II Xeon processor system bus operates using GTL+ signaling levels with a new type of buffer utilizing active negation and multiple termination. This new bus logic is called Assisted Gunning Transistor Logic, or AGTL+.

Product Overview

  • Power and performance for mid-range and higher servers and workstations.
  • Available at operating frequencies of 450 MHz or 400 MHz
  • 32KB (16KB data /16KB instruction) non-blocking, Level One (L1) cache provides fast access to heavily used data
  • Dual Independent Bus (D.I.B.) architecture increases performance and provides more data to the processor core
  • 100 MHz system bus speeds data transfer between the processor and the system
  • 400 MHz offers 1 MB and 512 KB L2 cache options. 450 MHz offers 2 MB, 1 MB, and 512 KB L2 cache options.
  • Level 2 cache bus operating at same speed as processor core provides new level of peak bandwidth to the processor
  • Cacheable address space up to 64GB
  • "Glueless" multiprocessing support for up to four processors
  • Supports 8-way and beyond systems through other clustering technologies
  • Intel® Extended Server Memory Architecture--expanded 36-bit memory support which allows operating systems and applications to utilize memory greater than 4 Gbytes
  • Thermal sensor allows system to actively manage thermal conditions
  • Error Checking and Correction (ECC) to maintain the integrity of mission-critical data
  • Functional Redundancy Checking (FRC) to confirm processing integrity
  • System Management Bus (SMBus) for efficient communications between the processor thermal sensor, processor-specific PIROM, OEM-writable EEPROM and the rest of the system

For more information, refer to the Intel Pentium II Xeon processor datasheet.


This applies to:

Intel® Pentium® II Xeon® Processor



Solution ID: CS-011199
Last Modified: 16-Nov-2009
Date Created: 14-May-2004
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