Graphics Subsystem; Audio Subsystem - HP Compaq dc7900 USDT Technical Reference Manual

System Overview

2.3.9 Graphics Subsystem

These systems use the Q45 GMCH component, which includes an integrated graphics controller
that can drive both an external VGA monitor and a DisplayPort digital display. The controller
implements Dynamic Video Memory Technology (DVMT 3.0) for video memory. Table 2-5 lists
the key features of the integrated graphics subsystem.
Recommended for
Bus Type
Memory Amount
Memory Type
DAC Speed
Maximum 2D Resolution
Hardware Acceleration
Outputs
All systems include a legacy VGA connector and a DisplayPort connector and support dual
monitor operation. The DisplayPort includes a multimode feature that allows a DVI or VGA
adapter to be connected to the DisplayPort.
These systems also include two PCIe graphics slots (one x16, one x4/x16 connector) to ensure
full graphics upgrade capabilities.

2.3.10 Audio Subsystem

These systems use the integrated High Definition audio controller of the chipset and the ADI
AD1884A High Definition audio codec. HD audio provides enhanced audio performance with
higher sampling rates, refined signal interfaces, and audio processors with increased
signal-to-noise ratio. The audio line input jack can be re-configured as a microphone input, and
multi-streaming is supported. These systems include a 1.5-watt output amplifier driving an
internal speaker, which can be muted with the F10 BIOS control. All models include front
panel-accessible stereo microphone input and headphone output audio jacks.
2-10
Table 2-5
Integrated Graphics Subsystem Statistics
www.hp.com
Q45 GMCH
Integrated Graphics Controller
Hi 2D, Entry 3D
Int. PCI Express
32 MB pre-allocated
DVMT 3.0
400 MHz
2048x1536 @ 85 Hz
Quick Draw,
DirectX 9,
Direct Draw,
Direct Show,
Open GL 1.45,
MPEG 1-2,
Indeo
1 VGA, 1 DisplayPort 1.1 [see text]
Technical Reference Guide