Chapter 2: Installation
Note 2: 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.
Possible System Memory Allocation & Availability
System Device
Size | Physical Memory Available |
| (4 GB Total System |
| Memory) |
Firmware Hub flash memory (System BIOS) | 1 MB | 3.99 GB | ||
Local APIC |
| KB | 3.99 GB | |
4 | ||||
Area Reserved for the chipset |
| MB | 3.99 GB | |
2 | ||||
I/O APIC (4 Kbytes) |
| KB | 3.99 GB | |
4 | ||||
PCI Enumeration Area 1 | 256 MB | 3.76 GB | ||
PCI Express (256 MB) | 256 MB | 3.51 GB | ||
PCI Enumeration Area 2 (if needed) | 512 MB | 3.01 GB | ||
boundary- |
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VGA Memory | 16 MB | 2.85 GB | ||
TSEG | 1 MB | 2.84 GB | ||
Memory available for the OS & other applications |
|
| 2.84 GB | |
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