Table 8. Memory details (continued)
Memory Speed
•  Minimal Power
•  Balanced
•  Max 
Performance
Select the desired memory speed. [Maximum 
Performance] mode maximizes performance. [Balanced] 
mode offers a balance between performance and power. 
[Minimal power] mode maximizes power savings. When a 
preset mode is selected, the low-level settings are not 
changeable and will be grayed out. If user would like to 
change the settings, choose [Custom Mode] in 
“Operating Mode” located under “System Setting” 
submenu. 
Max Performance is the default setting.
Memory Power Management
•  Automatic
•  Disable
[Disable] provides maximum performance but minimum 
power savings. [Automatic] is suitable for most 
applications. When a preset mode is selected, the low- 
level settings are not changeable and will be grayed out. If 
user would like to change the settings, please choose 
[Custom Mode] in “Operating Mode” located under 
“System Setting” submenu.
Disable is the default setting.
Socket Interleave
•  NUMA
•  Non-NUMA
Sets Socket Interleave to NUMA(Non Unified Memory 
Architecture) or Non-NUMA. [NUMA]: Memory is not 
interleaved across processors. [Non-NUMA]: Memory is 
interleaved across processors. 
Note: Changing this setting will require a Power Good 
reset to take effect.
Patrol Scrub
•  Enable
•  Disable
Enable/Disable “Patrol Scrub” which proactively searches 
the system memory to repair correctable errors. Enable is 
the default setting.
Memory Data Scrambling
•  Enable
•  Disable
Memory Data Scrambling Disable/Enable. Enable is the 
default setting.
ADDDC Sparing
•  Disable
•  Enable
Enable/Disable ADDDC Sparing. This setting is [Disable] 
and grayed out when Page Policy is [Adaptive]. Enabling 
ADDDC may cause reduced reliability of memory error 
correction in virtual lockstep under rare conditions. 
Disable is the default setting. 
Note: When the system uses x8 Dimm, this item will be 
hidden.
Page Policy
•  Adaptive
•  Closed
Adaptive Page Policy can improve performance for 
applications with a highly localized memory access 
pattern; Closed Page Policy can benefit applications that 
access memory more randomly. This setting is [Closed] 
and grayed out when ADDDC Sparing is [Enable]. 
Adaptive is the default setting.
Cold Boot Fast
•  Enable
•  Disable
Enable/Disable “Cold Boot Fast”. Enable is the default 
setting.
Memory Test
•  Automatic
•  Disable
•  Enable
[Enable] Enables memory test during normal boot. 
[Disable] - Disables this feature. [Automatic] - Skip 
memory test by default unless memory configuration 
changed or greater than 90 days since last time test ran. 
Automatic is the default setting.
22 ThinkSystem Server with Intel Xeon SP (1st, 2nd Gen) UEFI Manual