Supero SUPERSERVER 5018R-M, User Manual

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Chapter 5: Advanced Motherboard Setup
5-9
Notes
•
Be sure to use memory modules of the same type, same speed, same frequency
on the same motherboard. Mixing of memory modules of different types and
speeds is not allowed.
•
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 following table for
details.
•
For Microsoft Windows users: Microsoft implemented a design change in the
Windows XP with Service Pack 2 (SP2) and Windows Vista. This change is spe-
cific to the behavior of Physical Address Extension (PAE) mode 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
with 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 applications 2.84
Slot B2 (Blue Slot)
Slot B1
Slot A1
Slot A2
(Blue Slot)
Towards the edge of the motherboard
Towards the CPU