HP 8100 Technical Reference Guide: HP Compaq 8100 Elite Series Business Deskto - Page 69

Table 6-1., Integrated Graphics Controller, Memory Allocation with Windows XP

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Integrated Graphics Subsystem The total memory allocation is determined by the amount of system memory installed in a system, along with the BIOS settings, operating system, and system load. Table 6-1 shows the pre-allocation memory amounts. Table 6-1. Integrated Graphics Controller Memory Allocation with Windows XP System Memory Installed Pre-allocated DVMT 0.5 GB 32 MB 128 MB 1.0 GB 32 MB 512 MB 1.5 GB 32 MB 768 MB > 2GB 32 MB 1024 MB System memory that has been pre-allocated is not seen by the operating system, which will report the total amount of memory installed less the amount of pre-allocated memory. Systems running Windows Vista or Windows 7 use Protected Audio Video Path (PAVP) to ensure smooth playback of high-definition video by off-loading video decoding from the processor to the integrated graphics controller. BIOS can allocate addtional memory for PAVP, which can be set through RBSU to run in Lite mode (default) or in Heavy mode. Table 6-2 shows the PAVP memory usage for Windows Vista and Windows 7. Table 6-2. Integrated Graphics Controller Memory Allocation with Windows Vista or Windows 7 System Memory Installed PAVP Setting Available System Memory Total Available Graphics Memory [1] Shared System Memory [2] 1 GB Lite 952 MB 252 MB 124 MB Heavy 856 MB 294 MB 166 MB 2 GB Lite 1976 MB 764 MB 636 MB Heavy 1880 MB 806 MB 678 MB 4 GB Lite 4024 MB 1759 MB 1631 MB Heavy 3928 MB 1759 MB 1631 MB 6 GB Lite 6072 MB 1759 MB 1631 MB Heavy 5976 MB 1759 MB 1631 MB 8 GB Lite 8120 MB 1759 MB 1631 MB Heavy 8024 MB 1759 MB 1631 MB NOTES: Dedicated Video Memory (memory owned and locked for graphics use and reported by the OS): PAVP Lite setting = 32 MB PAVP Heavy setting = 122 MB System Video Memory (memory locked and dedicated for gtraphics use): PAVP Lite setting = 96 MB PAVP Heavy setting = 6 MB [1] Total amount of memory available for graphics as reported by the OS. [2] Shared System Memory (memory dynamically allocated for graphics use). Technical Reference Guide www.hp.com 6-3

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Technical Reference Guide
www.hp.com
6-3
Integrated Graphics Subsystem
The total memory allocation is determined by the amount of system memory installed in a
system, along with the BIOS settings, operating system, and system load. Table 6-1 shows the
pre-allocation memory amounts.
System memory that has been pre-allocated is not seen by the operating system, which will
report the total amount of memory installed
less
the amount of pre-allocated memory.
Systems running Windows Vista or Windows 7 use Protected Audio Video Path (PAVP) to
ensure smooth playback of high-definition video by off-loading video decoding from the
processor to the integrated graphics controller. BIOS can allocate addtional memory for PAVP,
which can be set through RBSU to run in Lite mode (default) or in Heavy mode. Table 6-2 shows
the PAVP memory usage for Windows Vista and Windows 7.
NOTES:
Dedicated Video Memory (memory owned and locked for graphics use and reported by the OS):
PAVP Lite setting = 32 MB
PAVP Heavy setting = 122 MB
System Video Memory (memory locked and dedicated for gtraphics use):
PAVP Lite setting = 96 MB
PAVP Heavy setting = 6 MB
[1] Total amount of memory available for graphics as reported by the OS.
[2] Shared System Memory (memory dynamically allocated for graphics use).
Table 6-1.
Integrated Graphics Controller
Memory Allocation with Windows XP
System Memory Installed
Pre-allocated
DVMT
0.5 GB
32 MB
128 MB
1.0 GB
32 MB
512 MB
1.5 GB
32 MB
768 MB
> 2GB
32 MB
1024 MB
Table 6-2.
Integrated Graphics Controller
Memory Allocation with Windows Vista or Windows 7
System Memory
Installed
PAVP
Setting
Available
System
Memory
Total
Available
Graphics Memory [1]
Shared
System
Memory [2]
1 GB
Lite
952 MB
252 MB
124 MB
Heavy
856 MB
294 MB
166 MB
2 GB
Lite
1976 MB
764 MB
636 MB
Heavy
1880 MB
806 MB
678 MB
4 GB
Lite
4024 MB
1759 MB
1631 MB
Heavy
3928 MB
1759 MB
1631 MB
6 GB
Lite
6072 MB
1759 MB
1631 MB
Heavy
5976 MB
1759 MB
1631 MB
8 GB
Lite
8120 MB
1759 MB
1631 MB
Heavy
8024 MB
1759 MB
1631 MB