HP dc7900 manual System Architecture, Architectural Differences By Form Factor, Function

System Overview

2.3System 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.

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

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.

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