Asus Crosshair IV Formula - Manual (Page 100)

3-24 Chapter 3: BIOS setup
The following items become user-configurable when you set ECC Mode to
[User]
DRAM ECC Enable [Enabled]
[Enabled] Enables the DRAM ECC that allows the hardware to report and correct
memory errors automatically.
[Disabled] Disables this function.
DRAM SCRUB REDIRECT [Disabled]
[Enabled] Allows the system to correct the DRAM ECC errors immediately when
they occur.
[Disabled] Disables this function.
4-Bit ECC Mode [Disabled]
[Enabled] Enables ECC chip kill feature.
[Disabled] Disables this function.
DRAM BG SCRUB [Disabled]
Disables or sets the DRAM BG Scrub.
Configuration options: [Disabled] [40ns] [80ns] [160ns] [320ns] [640ns] [1.28us]
[2.56us] [5.12us] [10.2us] [20.5us] [41.0us] [81.9us] [163.8us] [327.7us] [655.4us]
[1.31ms] [2.62ms] [5.24ms] [10.49ms] [20.97ms] [42.00ms] [84.00ms]
Data Cache BG Scrub [Disabled]
Disables or sets the Data Cache BG Scrub. This item allows the data cache BG
Scrub RAM to be corrected when idle.
Configuration options: [Disabled] [40ns] [80ns] [160ns] [320ns] [640ns] [1.28us]
[2.56us] [5.12us] [10.2us] [20.5us] [41.0us] [81.9us] [163.8us] [327.7us] [655.4us]
[1.31ms] [2.62ms] [5.24ms] [10.49ms] [20.97ms] [42.00ms] [84.00ms]
L2 Cache BG Scrub [Disabled]
Disables or sets the L2 Cache BG Scrub. This item allows the cache RAM to be
corrected when idle.
Configuration options: [Disabled] [40ns] [80ns] [160ns] [320ns] [640ns] [1.28us]
[2.56us] [5.12us] [10.2us] [20.5us] [41.0us] [81.9us] [163.8us] [327.7us] [655.4us]
[1.31ms] [2.62ms] [5.24ms] [10.49ms] [20.97ms] [42.00ms] [84.00ms]
L3 Cache BG Scrub [Disabled]
Disables or sets the L3 Cache BG Scrub. This item allows the cache RAM to be
corrected when idle.
Configuration options: [Disabled] [40ns] [80ns] [160ns] [320ns] [640ns] [1.28us]
[2.56us] [5.12us] [10.2us] [20.5us] [41.0us] [81.9us] [163.8us] [327.7us] [655.4us]
[1.31ms] [2.62ms] [5.24ms] [10.49ms] [20.97ms] [42.00ms] [84.00ms]
Primary Display Adapter [PCI-E]
Allows you to select the graphics controller to use as the primary boot device.
Configuration options: [PCI-E] [PCI]