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orkstation 7046A-HR+/7046A-HR+F User's Manual
Notes: Due to OS limitations, some operating systems may not show more than
4 GB of memory.
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. (See the Table below.)
Possible System Memory Allocation & Availability
System Device
Firmware Hub fl ash memory (System BIOS)
Local APIC
Area Reserved for the chipset
I/O APIC (4 Kbytes)
PCI Enumeration Area 1
PCI Express (256 MB)
PCI Enumeration Area 2 (if needed) -Aligned on
256-MB boundary-
VGA Memory
TSEG
Memory available for the OS & other applications
5-7
Installing PCI Expansion Cards
The 7046A-HR+/7046A-HR+F can accommodate standard size add-on cards in-
stalled into all of the slots on the X8DAH+/X8DAH+F serverboard.
Installing an Add-on Card
1.
Begin by removing the shield for the PCI slot you wish to populate.
2.
Fully seat the card into the slot, pushing down with your thumbs evenly on
both sides of the card.
3.
Finish by using a screw to secure the top of the card shield to the chassis.
The PCI slot shields protect the serverboard and its components from EMI
and aid in proper ventilation, so make sure there is always a shield covering
each unused slot.
Size
Physical Memory Remaining (Available)
(4 GB Total System Memory)
1 MB
3.99 GB
4 KB
3.99 GB
2 MB
3.99 GB
4 KB
3.99 GB
256 MB
3.76 GB
256 MB
3.51 GB
512 MB
3.01 GB
16 MB
2.85 GB
1 MB
2.84 GB
2.84 GB
5-10
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