System Architecture - HP Compaq dc7900 USDT Technical Reference Manual

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.
Function
Memory sockets
PCIe 2.0 x16 graphics slot
PCIe x4 (x16 connector) graphics slot
# of PCIe 1.1 x1 slots
# of PCI 2.3 slots
Serial port
Parallel ports
SATA interfaces
eSATA capability [2]
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.
2-4
Table 2-2.
Architectural Differences By Form Factor
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USDT SFF
2 SODIMMs 4 DIMMs
No 1 [1]
No 1 [1]
0 1 [1]
0 1 [3]
0 1 [4]
0 optional
2 3
No Yes
CMT
4 DIMMs
1
1
1
3
1 [4]
optonal
4
Yes
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