All Xeon Models

Pentium II Xeon

Intel released Pentium II Xeon in June 1998. This is an Intel 6th generation CPU, since it is based on the same architecture used by Pentium Pro.

Pentium II XeonFigure 1: Pentium II Xeon processor.

The main difference between Pentium II Xeon and Pentium II is the clock rate on which the L2 memory cache is accessed. While Pentium II Xeon accesses its L2 memory cache using its internal clock rate (e.g., 400 MHz on a 400 MHz Pentium II Xeon), Pentium II accesses its L2 memory cache at half its internal clock rate (e.g., 200 MHz on a 400 MHz Pentium II).

The main technical features of Pentium II Xeon are:

  • 16 KB instruction L1 memory cache and 16 KB data L1 memory cache.
  • 512 KB, 1 MB or 2 MB L2 memory cache accessed at the same internal clock rate as the CPU.
  • 100 MHz external bus.
  • Access to up 64 GB RAM memory.
  • Symmetric multiprocessing (SMP) up to four CPUs (models with 2 MB L2 cache allowed SMP up to eight CPUs).
  • The CPU was installed in a cartridge called SECC (Single Edge Contact Cartridge) and connected to the motherboard through a 330-contact connector called slot 2.
  • Based on “Deschutes” core (the same used by Pentium II processors with 100 MHz external bus) and manufactured with 0.25 µm technology, had 7.5 million transistors and used an area of 203 mm2.

Pentium II Xeon used a Pentium II-like slot, but it was incompatible, since it had 330 contacts (Pentium II slot had 220 contacts). This means that we couldn’t install a Pentium II Xeon on a Pentium II motherboard and vice-versa.

In the table below you see all Pentium II Xeon models that were released. TDP stands for Thermal Design Power and indicates the CPU maximum thermal dissipation, i.e., the CPU cooler must be able to dissipate at least this amount of heat. 

sSpec Internal Clock TDP L2 Memory Cache Max. Temp. (° C)
SL34H 400 MHz 30.8 W 512 KB 75
SL34J 400 MHz 38.1 W 1 MB 75
SL35N 400 MHz 30.8 W 512 KB 75
SL35P 400 MHz 38.1 W 1 MB 75
SL2RH 400 MHz 30.8 W 512 KB 75
SL2NB 400 MHz 38.1 W 1 MB 75
SL36W 450 MHz 34.5 W 512 KB 75
SL2XJ 450 MHz 34.5 W 512 KB 75
SL2XK 450 MHz 42.8 W 1 MB 75
SL354 450 MHz 34.5 W 512 KB 75
SL2XL 450 MHz 46.7 W 2 MB 75
SL33T 450 MHz 34.5 W 512 KB 75
SL33V 450 MHz 46.7 W 2 MB 75
SL33U 450 MHz 42.8 W 1 MB 75

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Author: Gabriel Torres

Gabriel Torres is a Brazilian best-selling ICT expert, with 24 books published. He started his online career in 1996, when he launched Clube do Hardware, which is one of the oldest and largest websites about technology in Brazil. He created Hardware Secrets in 1999 to expand his knowledge outside his home country.

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