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Memory

This menu displays and provides options to change the memory setting.



Table 1. Memory details
ItemOptionsDescription
System Memory Details 

View the status of system memory.

Total Memory Sizeyyyy GB

This item is hardware dependent.

Memory Speed

  • Minimal Power

  • Balanced

  • Max Performance (Default)

Select the desired memory speed.

  • Minimal power: maximizes power savings.

  • Balanced: offers a balance between performance and power.

  • Max Performance: maximizes performance.

When a preset mode is selected, the low-level setting are not changeable and will be grayed out. To change the settings, select Choose Operating Mode > Custom Mode.

Memory Power Management

  • Automatic

  • Disable (Default)

  • Automatic: suitable for most applications.

  • Disable: provides maximum performance but minimum power savings.

When a preset mode is selected, the low-level setting are not changeable and will be grayed out. To change the settings, select Choose Operating Mode > Custom Mode.

Patrol Scrub

  • Enable (Default)

  • Disable

Enable this item to proactively searches and repairs correctable errors in the system memory.

Memory Data Scrambling

  • Enable (Default)

  • Disable

Enable/Disable memory data scrambling.

ADDDC Sparing

  • Enable

  • Disable (Default)

Enable/Disable ADDDC Sparing.

This setting is disabled and grayed out when Page policy is Adaptive.

Enabling ADDDC may cause reduced reliability of memory error correction in virtual lockstep under rare conditions.

Page Policy

  • Adaptive (Default)

  • Closed

  • Adaptive page policy: improves performance for applications with a highly localized memory access pattern.

  • Closed page policy: benefits applications that access memory more randomly.

Note
This item will be set to Closed and grayed out when ADDDC Sparing is set to Enable.
Cold Boot Fast

  • Enable (Default)

  • Disable

Enable/Disable Cold Boot Fast.

Memory Test

  • Automatic (Default)

  • Disable

  • Enable

  • Automatic: skips the memory test by default unless memory configuration is changed or the last time the test has been run is more than 90 days ago.

  • Disable: disables this feature.

  • Enable: enables the memory test during normal boot.

2x Refresh Rate

  • Disabled (Default)

  • Auto

  • Disabled: sets system with 1x refresh rate.

  • Auto: sets 2x refresh rate if system supports.

Choose refresh rate 2x to mitigate rowhammer issue which may cause side effect on performance.

When the system has 16Gb 3DS LRDIMM/RDIMM or 16Gb Quad Rank LRDIMMS, 2x refresh rate is not supported.

Refresh Watermarks

  • Auto (Default)

  • Low WM

  • Low WM: mitigates power delivery issues with 128 GB or larger DIMM, and mitigates failures caused by rowhammer traffic patterns.

  • Auto: uses Low Watermarks for 16 Gb DIMM, and use High Watermarks for other DIMM configurations.