Intel Pentium 4 Processor - HP Compaq d330 DT Technical Reference Manual

Chapter 2 System Overview

2.4.1 INTEL PENTIUM 4 PROCESSOR

The models covered in this guide feature the Intel Pentium 4 processor. This processor is
backward-compatible with software written for the Pentium III, Pentium II, Pentium MMX,
Pentium Pro, Pentium, and x86 microprocessors. The processor architecture includes a floating-
point unit, 32-KB first and 512-KB secondary caches, and enhanced performance for multimedia
applications through the use of multimedia extension (MMX) instructions. Also included are
streaming SIMD extensions (SSE and SSE2) for enhancing 3D graphics and speech processing
performance. The Pentium 4 processor features Net-Burst Architecture that uses hyper-pipelined
technology and a rapid-execution engine that runs at twice the processor's core speed.
These systems employ an mPGA478B zero-insertion-force (ZIF) socket designed for mounting a
"Flip-Chip" (FC-PGA2) processor package (Figure 2-12).
Heatsink / Fan Assembly [1]
Processor in
FC-PGA-2
Package
Socket
NOTE:
[1] SFF air baffle shown. USDT baffle slightly different.
Baffle not present on all other form factors.
Figure 2-12. Processor Socket, Package, and Heatsink/Fan Assembly
NOTE: The original heatsink / fan assembly or an exact duplicate must be used when
replacing the processor. Refer to the applicable Service and Reference Guide for removal
and replacement procedures.
2-16 hp compaq d330 and d530 Series Personal Computers
Featuring the Intel Pentium 4 Processor
First Edition– June 2003
Fan Assembly
Release Tab
Heat Sink
Retaining Clips
Lock/Unlock
Handle