HP (Hewlett-Packard) DC7900 ユーザーズマニュアル
Integrated Intel
Graphics Media
Accelerator 4500
Graphics Media
Accelerator 4500
3D/2D Controller
Microsoft DirectX® 10 based with support for Pixel Shader 3.0
VGA Controller
Integrated
DisplayPort
Integrated, Multimode capable; supports HDCP
Bus Type
PCI Express™ x16
RAMDAC
Integrated, 350 MHz
Memory
Graphics memory is shared with system memory. Graphics memory usage
varies depending on the amount of system memory installed, BIOS settings,
operating system, and system load. 32 MB is pre-allocated for graphics use at
system boot time. Additional memory can be allocated at boot time by the BIOS
for PAVP (Protected Audio Video Playback) support for playback of protected
video content. For Vista, use of PAVP heavy mode preallocates an additional
96MB.
varies depending on the amount of system memory installed, BIOS settings,
operating system, and system load. 32 MB is pre-allocated for graphics use at
system boot time. Additional memory can be allocated at boot time by the BIOS
for PAVP (Protected Audio Video Playback) support for playback of protected
video content. For Vista, use of PAVP heavy mode preallocates an additional
96MB.
Additional memory is allocated for graphics as needed using Intel's Dynamic
Video Memory Technology (DVMT), to provide an optimal balance between
graphics and system memory use.
Video Memory Technology (DVMT), to provide an optimal balance between
graphics and system memory use.
Windows XP Memory Usage:
Total System Memory
Pre-Allocated (MB)
DVMT (MB)
.5GB
32
128
1.0GB
32
512
1.5GB
32
768
2 GB & more
32
1024
Windows Vista Memory Usage:
(Assumes Management Engine , VT-d enabled and other memory allocated for
other BIOS usage )
(Assumes Management Engine , VT-d enabled and other memory allocated for
other BIOS usage )
System
Memory
PVAP
Avail
System
Memory
(MB)
Total Avail
GFX
Memory
(MB)
Dedicated
Video
Memory
(MB)
System
Video
Memory
(MB)
Shared
System
System
Memory
(MB)
1 GB
Lite
952
252
32
96
124
Heavy
856
294
122
6
166
2 GB
Lite
1976
764
32
96
636
Heavy
1880
806
122
6
678
4 GB
Lite
4024
1759
32
96
1631
Heavy
3928
1759
122
6
1631
6 GB
Lite
6072
1759
32
96
1631
Heavy
5976
1759
122
6
1631
8 GB
Lite
8120
1759
32
96
1631
Heavy
8024
1759
122
6
1631
Total Available GFX Memory: Total graphics memory available to the system
as reported by the OS.
as reported by the OS.
Dedicated Video Memory: Memory owned and locked for graphics use as
reported by the OS. (Preallocated)
reported by the OS. (Preallocated)
System Video Memory: System memory locked and dedicated for graphics
use.
use.
Shared System Memory: Memory dynamically allocated for Graphics use
HW Video Decode
Hardware Accelerated decode for MPEG2 encrypted video; support for PAVP
Lite (default) and Heavy ( or Paranoid) modes
Lite (default) and Heavy ( or Paranoid) modes
Maximum Color Depth32 bits/pixel
QuickSpecs
HP Compaq dc7900 Business PC
Technical Specifications - Graphics
DA - 13029 Worldwide QuickSpecs — Version 24 — 10/30/2009
Page 37