Intel Xeon Guidelines

Intel® Xeon™ Processor with 512 KB L2 Cache System Compatibility Guidelines
6
3.0 Compatibility
Implementing the changes outlined in this document will help assure that an Intel®
Xeon™ processor-based system design will be compatible with the Intel Xeon processor
with 512 KB L2 cache. Compatibility is likely to be ultimately limited by the ability of the
system to supply the required current and to adequately cool the processor.
4.0 SM_VCC
SM_VCC must be connected to the system 3.3 volt power supply since the Intel® Xeon™
processor with 512 KB L2 cache drives the voltage identification (VID) outputs using core
circuitry powered by the SM_VCC supply.
Refer to Section 6.0 for further considerations involving the power sequencing
requirements of SM_VCC
5.0 603-Pin Socket Pin Definition Changes
The Intel® Xeon™ processor with 512 KB L2 cache is mechanically and electrically
compatible with the same 603-pin socket used for the Intel Xeon processor. However, in
order to support the increased frequencies offered by the Intel Xeon processor with 512
KB L2 cache, "Reserved" and "N.C." pins from the original Intel Xeon processor pin
definition have been designated as either V
CC
or V
SS
. Intel Xeon processor-based
platforms need to redefine the 603-pin socket pin map as listed in the “New Name”
column of Table 1 to allow compatibility with the Intel Xeon processor with 512 KB L2
cache.
Table 1. 603-Pin Socket Pin-Map Change
Pin Old Name New Name Comment
A30 RSVD V
CC
Processor Power
A31 RSVD V
SS
Processor Ground
B4 RSVD V
CC
Processor Power
B30 RSVD V
SS
Processor Ground
B31 RSVD V
CC
Processor Power
C1 RSVD V
SS
Processor Ground
C30 RSVD V
CC
Processor Power
C31 RSVD V
SS
Processor Ground
D1 RSVD V
CC
Processor Power
D30 RSVD V
SS
Processor Ground

Intel Xeon Specifications

General

Brand	Intel
Model	Xeon
Category	Processor
Language	English