96  |   Using the System Setup Program 
 
 
NOTE: BIOS will auto restrict selection if DIMM does not 
support low voltage. 
NUMA Support 
(Enabled default) 
Disabled – for BIOS setup to allow users enable the 
node interleave option. This is for NUMA systems that 
allow memory interleaving across all processor nodes. 
Enabled – for BIOS setup to allow users disable the 
node interleave option. This is for NUMA systems that 
allows memory interleaving across all processor nodes.  
Memory-Mapped I/O 
(Auto default) 
Auto - Supports PCI-E 32-bit BAR (base address 
register) in default and sets PCI-E 64-bit BAR 
automatically while PowerEdge C410x or Knights 
Corner GPU card are installed. 
32-bit – Forced to support PCI-E 32-bit BAR. 
64-bit – Forced to support PCI-E 64-bit BAR." 
Memory Refresh Rate 
(X1 default) 
To disable or enable 2X refresh.