Chapter 2: Installation
2-15
Note:
Due to memory allocation to system devices, the amount of memory that
remains available for operational use will be reduced when 4 GB of RAM is
used. The reduction in memory availability is disproportional.
For Microsoft Windows users: Microsoft implemented a design change in Win-
dows XP with Service Pack 2 (SP2) and Windows Vista. This change is specific
to the Physical Address Extension (PAE) mode behavior which improves driver
compatibility. For more information, please read the following article at Microsoft’s
Knowledge Base website at: http://support.microsoft.com/kb/888137.
Possible System Memory Allocation & Availability
System Device
Size
Physical
Memory
Remaining (-Available)
(4 GB Total System Memory)
Firmware Hub flash memory (System
BIOS)
1 MB
3.99
Local APIC
4 KB
3.99
Area Reserved for the chipset
2 MB
3.99
I/O APIC (4 Kbytes)
4 KB
3.99
PCI Enumeration Area 1
256 MB
3.76
PCI Express (256 MB)
256 MB
3.51
PCI Enumeration Area 2 (if needed)
-Aligned on 256-MB boundary-
512 MB
3.01
VGA Memory
16 MB
2.85
TSEG
1 MB
2.84
Memory available to OS and other ap-
plications
2.84
Summary of Contents for Supero C2G41
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