Asus CROSSHAIR IV FORMULA User Guide - Page 100

Primary Display Adapter [PCI-E], Configuration options: [PCI-E] [PCI] - ram

Page 100 highlights

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] 3-24 Chapter 3: BIOS setup

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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]