2-6 www.hp.com Technical Reference Guide
System Overview
2.3.1 Intel Processor Support
The models covered in this guide are designed to support Intel Celeron single and dual core
processors, Intel Pentium Dual-Core processors, Intel Core2 Duo processors, and Intel Core2
Quad processors. These processors are backward-compatible with software written for earlier
x86 microprocessors and include streaming SIMD extensions (SSE, SSE2, and SSE3) for
enhancing 3D graphics and speech processing performance. Intel processors with vPro
Technology include hardware-based tools that allow corporate IT organizations to remotely
manage and protect systems.
The system board includes a zero-insertion-force (ZIF) Socket-T designed for mounting an
LGA775-type processor package.
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CAUTION: The USDT form factor can support a processor rated up to 65 watts. The SFF and CMT form
factors can support a processor rated up to 95 watts. Exceeding these limits can result in system damage
and loss of data.
✎
The processor heatsink/fan assembly mounting differs between form factors. Always use the
same assembly or one of the same type when replacing the processor. Refer to the applicable
Service Reference Guide for detailed removal and replacement procedures of the heatsink/fan
assembly and the processor.
2.3.2 Chipset
The Intel Q45 Express chipset consists of a Graphics Memory Controller Hub (GMCH) and an
enhanced I/O controller hub (ICH10-DO). Table 2-3 compares the functions provided by the
chipsets.
Table 2-3
Chipset Components and Functionality
Components Function
Q45 GMCH Intel Graphics Media Accelerator 4500 (integrated graphics controller)
PCIe 2.0 x16 graphics interface (1)
SDRAM controller supporting unbuffered, non-ECC DDR3 modules
FSB speed of 800-, 1066-, or 1333-MHz
82801 ICH10-DO PCI 2.3 bus I/F
PCIe bus I/F
LPC bus I/F
SMBus I/F
SATA I/F
HD audio interface
RTC/CMOS
IRQ controller
Power management logic
USB 1.1/2.0 controllers supporting 12 ports
Gigabit Ethernet controller
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