Intel Pentium III Xeon Tanner core

Previous generation		Related core	Next Generation
Drake » 0.25 micron » 100 MHz FSB » Up to 2 MB L2 cache Pentium II Xeon	Tanner » 0.25 micron » SSE instructions Pentium III Xeon	Katmai » 512 KB L2 cache » L2 cache runs at 1/2 CPU speed » Works in 1- and 2-way systems Pentium III	Cascades » 0.18 micron » On-die L2 cache » 133 MHz FSB Pentium III Xeon

The Tanner core was introduced on March 17, 1999. This core is based on P6 microarchitecture.

New core features:

• SSE instructions

Pentium III Xeon processors with Tanner core can be identified by:

• Part number: part number contains "80525K".
  An example: 80525PY550512.
• CPU ID: First two digits of CPU identification numbers of Tanner processors are "67". Please note that Pentium III microprocessors with Katmai core have the same CPU IDs.

	Pentium III Xeon
Manufacturing technology	0.25 micron
Frequency	500 MHz - 550 MHz
Fastest processor	80525KY5502M (BX80525KY5502M) - 550 MHz, 2 MB L2 cache 80525KY5501M (BX80525KY5501M) - 550 MHz, 1 MB L2 cache
Front-side bus	100 MHz
L2 cache	Backside 512 KB running at the CPU speed Backside 1 MB running at the CPU speed Backside 2 MB running at the CPU speed
Package	Single Edge Contact Cartridge
Socket	Slot 2