HP DC71XX, DX61XX 2.4 System Architecture

System Overview

2.4 System Architecture

The systems covered in this guide feature an architecture based on the Intel Pentium 4 processor and the Intel 915G chipset (Figure 2-11). These systems allow processor upgrading with the Intel Pentium 4 family and offer flexibility in expansion capabilities.

All systems covered in this guide include the following key components:

■Intel Pentium 4 with Hyper-Threading technology, 32-KB L1 cache and 1-MB L2 cache.

■Intel 915G/GV chipset - Includes 82915G or 82915GV GMCH north bridge and 82801 ICH6 south bridge including an integrated graphics controller, dual-channel DDR1 or DDR2 SDRAM controller, serial and parallel ATA controllers, USB 2.0 controller, and PCI controller supporting PCI 2.3 devices.

■SMC 47B397 super I/O controller supporting PS/2 keyboard and mouse peripherals

■AD1981B audio controller supporting line in, speaker out, and headphone out

■Broadcom BCM5751 10/100/1000 network interface controller

The 915G/GV chipset provides a major portion of system functionality. Designed to compliment the latest Intel Pentium 4 processors, the chipset serves the processor through a 800-MB Front-Side Bus (FSB). Communication between the GMCH and ICH6 components occurs through the Direct Media Interface (DMI). The SFF, ST, MT, and CMT form factors use the integrated graphics controller of the 82915G that may be upgraded through a PCI Express x16 graphics slot. All systems include a PCI 2.3 slot, and feature as standard a serial ATA (SATA) hard drive with support for legacy parallel ATA 100 devices including a MultiBay device.

Table 2-2 lists the differences between models.

Table 2-2.

Architectural Differences By Form Factor

Model	USDT	SFF	ST	MT	CMT
Chipset	915GV	915G	915G	915G	915G
Memory sockets	3	4	4	4	4
DDR2 models?	No	Yes	Yes	Yes	Yes
Graphics upgrade	PCI 2.3 card	PCI-E or	PCI-E or	PCI-E or	PCI-E or
	only	PCI 2.3 card	PCI 2.3 card	PCI 2.3 card	PCI 2.3 card
PCI Express x16	No	Yes [1]	Yes [1]	Yes	Yes
graphics slot?
PCI Express x1 slot?	No	Yes [1]	Yes [1]	Yes	Yes
Serial / parallel ports	Optional [2]	Standard [3]	Standard [3]	Standard [3]	Standard [3]
SATA interfaces	1	2	2	4	4

Notes:

[1]Slot not accessible if PCI 2.3 full-height riser is installed.

[2]Requires adapter.

[3]2nd serial port requires adapter.

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