HP dc7800 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 Q35 Express chipset (Figure 2-13). 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 Q35 Express chipset - Includes Q35 GMCH north bridge and 82801 ICH9-DO south bridge

■SMC SCH5327 super I/O controller supporting PS/2 keyboard and mouse peripherals

■AD1884 audio controller supporting line in, line out, microphone in, and headphones out

■Intel 82566DM 10/100/1000 network interface controller

The Q35 chipset provides a major portion of system functionality. Designed to compliment the latest Intel processors, the Q35 GMCH integrates with the processor through a 800/1066/1333-MHz Front-Side Bus (FSB) and communicates with the ICH9-DO component through the Direct Media Interface (DMI). The integrated graphics controller of the Q35 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. The USDT model supports a Slimline Optical Drive through a legacy parallel ATA 100 interface.

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 x16 graphics slot?	No	Yes [1]	Yes
# of PCIe x1 slots	1 [2]	2 [1]	2
# of PCI 2.3 slots	0	1 [3]	3
Serial / parallel ports	0	1 [4]	1 [4]
Parallel ports	0	1	1
SATA interfaces	1	3	4

Notes:

[1]Low-profile slot. Not accessible if PCI riser is installed.

[2]PCIe Mini-Card slot.

[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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