Technical Reference Guide: HP Compaq 8100 Elite Series Business Desktop Computers

6-4 www.hp.com Technical Reference Guide
Integrated Graphics Subsystem
The integrated graphics controller will use, in standard VGA/SVGA modes, pre-allocated
memory as a true dedicated frame buffer. If the system boots with the OS loading the Extreme
Graphics drivers, the pre-allocated memory will then be re-claimed by the drivers and may or
may not be used in the “extended” graphic modes. However, it is important to note that
pre-allocated memory is available only to the integrated graphics controller, not to the OS.
The DVMT function is an enhancement over the Unified Memory Architecture (UMA) of earlier
systems. The DVMT of the Q57 selects, during the boot process, the maximum graphics memory
allocation possible according on the amount of system memory installed:
The actual amount of system memory used in the “extended” or “extreme” modes will increase
and decrease dynamically according to the needs of the application. The amount of memory used
solely for graphics (video) may be reported in a message on the screen, depending on the
operating system and/or applications running on the machine.
For viewing the maximum amount of available frame buffer memory MS Windows go to the
Control Panel and select the Display icon, then > Settings > Advanced > Adapter.
The Microsoft Direct Diagnostic tool included in most versions of Windows may be used to
check the amount of video memory being used. The Display tab of the utility the “Approx. Total
Memory” label will indicate the amount of video memory. The value will vary according to OS.
✎
Some applications, particularly games that require advanced 3D hardware acceleration, may not
install or run correctly on systems using the integrated graphics controller.
Table 6-3 listed the relostions supported by the integrated graphic controller. Other resolutions
may be possible have not been tested or qualified by HP.
NOTES:
Other resolutions may be possible but have not been tested or qualified by HP.
[1] Only supported when using a DisplayPort connection.
Table 6-3.
Integrated Graphics Controller
Supported Resolutions
Resolution
Maximum Refresh Rate
Analog Digital
640 x 480 85 60
800 x 600 85 60
1024 x 768 85 60
128 0 x 72 0 85 6 0
128 0 x 1024 85 6 0
14 40 x 9 0 0 75 6 0
160 0 x 12 0 0 85 60
168 0 x 1050 75 6 0
1920 x 1080 85 60-R
1920 x 1200 85 60-R
1920 x 1440 85 n/ a
2048 x 1536 75 n/a
2560 x 1600 n/a 60 [1]