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2-4 www.hp.com Technical Reference Guide
System Overview
2.3 System Architecture
The systems covered in this guide feature an architecture based on the Intel Q45 Express chipset
(Figure 2-2). All systems covered in this guide include the following key components:
■ Intel Pentium Dual-Core, Core 2 Duo, Core 2 Quad, or Celeron processor.
■ Intel Q45 Express chipset - Includes Q45 GMCH and 82801 ICH10-DO
■ Super I/O (SIO) controller supporting PS/2 keyboard and mouse peripherals
■ AD1884A audio controller supporting line in, line out, microphone in, and headphones out
■ Intel 82567LM GbE network interface controller
The Q45 chipset provides a major portion of system functionality. Designed to complement the
latest Intel processors, the Q45 GMCH integrates with the processor through a
800/1066/1333-MHz Front-Side Bus (FSB) and communicates with the ICH10-DO component
through the Direct Media Interface (DMI). The integrated graphics controller of the Q45 on SFF
and CMT systems can be upgraded through a PCI Express (PCIe) x16 graphics slot. All systems
include a serial ATA (SATA) hard drive in the standard configuration.
Table 2-2 lists the differences between models by form factor.
Notes:
[1] Low-profile slot. Not accessible if PCI riser is installed.
[2] Requires optional bracket/cable assembly.
[3] Low-profile slot in standard configuration. 2 full-height slots supported with optional PCI riser.
[4] 2nd serial port possible with optional adapter.
Table 2-2.
Architectural Differences By Form Factor
Function USDT SFF CMT
Memory sockets 2 SODIMMs 4 DIMMs 4 DIMMs
PCIe 2.0 x16 graphics slot No 1 [1] 1
PCIe x4 (x16 connector) graphics slot No 1 [1] 1
# of PCIe 1.1 x1 slots 0 1 [1] 1
# of PCI 2.3 slots 0 1 [3] 3
Serial port 0 1 [4] 1 [4]
Parallel ports 0 optional optonal
SATA interfaces 2 3 4
eSATA capability [2] No Yes Yes