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3.4.1 2– 4GB Memory Hole Adjust
Feature
Option
Description
MTRR Mapping Method
Continuous
Discrete
Select the CPU MTRR mapping method.
Discrete - Compatible with Linux AGP.
Continuous – Default method.
Memhole mapping
Disable
Software
Hardware
Remapping scheme for PCI memory hole.
Enable all memory clocks
Populated
All
Populated: Only enable those clocks
where populated
All: Enable all memory clocks, whether
populated or not
Controller config mode
AUTO
Manual
Controller config mode
Timing Config mode
AUTO
Manual
Timing Config mode
Memory Hole Adjustment
AUTO
Manual
4GB Memory Hole Size
64M
128M
256M
…
3584M
Either manually adjust the PCI memory
hole or select automatic.
Be aware that if Memory hole mapping is
set to Software, the actual hole size will
depend on the size of installed DIMMs.
Large Memory Simulation
Disable
+64G
64G - Memory must be on Node0
- Memory Map:
Node 0 base to Node 0 Limit.
64G -> (64G +remaining memory)
Dram Bank Interleave
AUTO
Disable
Interleave memory blocks across dram
chip selects. BIOS will AUTO detect
capability on each Node.
Node memory Interleave
Disable
AUTO
Interleave memory blocks across
processor nodes BIOS will AUTO detect
capability of Memory System.
Note: This cannot be enabled if ACPI
SRAT table is also enabled. Changing
one value will also toggle the other.
Memory Speed Control
AUTO
333MHZ
400MHZ
Memory Speed Control