11
1 Product Description
What This Chapter Contains
1.1 PCI Bus Terminology Change...................................................................................... 11
1.2 Board Differences ........................................................................................................ 11
1.3 Overview ...................................................................................................................... 12
1.4 Online Support ............................................................................................................. 19
1.5 Processor ..................................................................................................................... 19
1.6 System Memory ........................................................................................................... 20
1.7 Intel
®
915G Chipset .....................................................................................................26
1.8 PCI Express Connectors.............................................................................................. 30
1.9 I/O Controller................................................................................................................ 31
1.10 Audio Subsystem ......................................................................................................... 32
1.11 LAN Subsystem ........................................................................................................... 35
1.12 Hardware Management Subsystem............................................................................. 38
1.13 Power Management ..................................................................................................... 41
1.14 Trusted Platform Module (Optional) ............................................................................. 48
1.1 PCI Bus Terminology Change
Previous generations of Intel
®
Desktop Boards used an add-in card connector referred to as PCI.
This generation of Intel Desktop Boards adds a new technology for add-in cards: PCI Express.
The 32-bit parallel bus previously referred to as PCI is now called PCI Conventional.
1.2 Board Differences
This TPS describes these Intel Desktop Boards: D915GAV and D915GAG. The Desktop Boards
are identical with the exception of the items listed in Table 1.
Table 1. Summary of Board Differences
D915GAV D915GAG
Form factor ATX microATX
PCI Conventional Bus
add-in card connectors
Four Two
PCI Express x1 bus add-
in card connectors
Two One
Chassis fan connectors Three: front chassis, rear chassis 1,
and rear chassis 2
Two: front chassis and rear chassis
LAN configuration 10/100 Mbits/sec LAN subsystem
only
One of the following:
• Gigabit (10/100/1000 Mbits/sec)
LAN subsystem
• 10/100 Mbits/sec LAN subsystem
• No LAN subsystem
