System Architecture - HP Compaq dx6100 Series Technical Reference Manual

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 DDR 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.
Model
Chipset
Memory sockets
Graphics upgrade
PCI Express x16
graphics slot?
PCI Express x1 slot?
Serial / parallel ports
SATA interfaces
Notes:
[1] Slot not accessible if PCI 2.3 full-height riser is installed.
[2] Requires adapter.
[3] 2nd serial port requires adapter.
2-22
Table 2-2.
Architectural Differences By Form Factor
USDT SFF
915GV 915G
3 4
PCI 2.3 card PCI-E or
only
PCI 2.3 card
No Yes [1]
No Yes [1]
Optional [2] Standard [3]
1 2
361834-001
ST MT
915G 915G
4 4
PCI-E or PCI-E or
PCI 2.3 card PCI 2.3 card
Yes [1] Yes
Yes [1] Yes
Standard [3] Standard [3]
2 4
Technical Reference Guide
CMT
915G
4
PCI-E or
PCI 2.3 card
Yes
Yes
Standard [3]
4