Introduction
20
Design Guide
1.3.1
Intel
®
Xeon™ Processor with 512 KB L2 Cache
The Intel Xeon processor with 512 KB L2 cache is the second generation of microprocessors
targeted for severs and workstations using the Intel
®
NetBurst™ microarchitecture. The Xeon
processor delivers performance levels that are significantly higher than previous generations of IA-
32 processors. The E7500 chipset supports all speeds of the Intel Xeon processor with 512 KB L2
cache.
Unless otherwise noted, the term “processor” refers to the Xeon processor.
The Xeon processor includes the following advanced microarchitecture features:
•
Hyper Pipelined Technology.
•
Advanced Dynamic Execution.
•
Execution Trace Cache.
•
Streaming SIMD (single instruction, multiple data) Extensions 2.
•
Advanced Transfer Cache.
•
Enhanced Floating Point and Multimedia Engine.
The Intel Xeon processor system bus utilizes a split-transaction, deferred reply protocol similar to
that of the Intel
®
Pentium III Xeon™ processor bus, however the system bus is not compatible
with the Pentium III Xeon processor bus. The system bus uses source-synchronous transfer of
address and data to improve performance and enables addressing at 2X the system bus frequency
of 100 MHz and data transfers at 4X the system bus frequency of 100 MHz. This allows the
processors to transfer data at 3.2 GB/s.
The Xeon processor provides manageability features consistent with Intel
®
Pentium
®
III
Xeon™
processors. These features include the Processor Information ROM, the OEM EEPROM, and the
processor thermal sensor; all of which are accessed through the System Management Bus
(SMBus). The Processor Information ROM is a 128-byte read-only device that incorporates Intel
processor specific data. The OEM EEPROM, also known as the “scratchpad EEPROM,” is a
128-byte read/write EEPROM in which an OEM may program system specific data. The thermal
sensor monitors the temperature of the processor die.
Table 1-2. Intel
®
Xeon™ Processor with 512 KB L2 Cache Feature Set Overview
Feature
Xeon™
L2 Cache
512 KB
Data Bus Transfer Rate
3.2 GB/s
Multi-Processor Support
1–2 CPUs
Manageability Features
Intel and OEM EEPROMs and
thermal sensor on package
Package
603-pin micro-PGA
Operating Voltage
1.50 V
Содержание Xeon
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