Ecc configuration, Channel interleaving [xor of address bit, Memclk tristate c3/atlvid [disabled – Asus Crosshair IV Formula User Manual
Page 99: Dct unganged mode [always, Power down enable [disabled, Configuration options: [disabled] [enabled, Configuration options: [auto] [always

ROG Crosshair IV Formula
3-23
ECC Configuration
Crosshair IV Formula BIOS Setup
Advanced
ECC Configuration
ECC Mode
[Disabled]
DRAM ECC Enable
[Disabled]
DRAM SCRUB REDIRECT
[Disabled]
4-Bit ECC Mode
[Disabled]
DRAM BG Scrub
[Disabled]
Data Cache BG Scrub
[Disabled]
L2 Cache BG Scrub
[Disabled]
L3 Cache BG Scrub
[Disabled]
Set the level of ECC
protection. Note:
The ‘Super‘ ECC mode
dynamically sets
the DRAM scrub rate
so all of memory is
scrubbed in 8 hours.
ECC Mode [Disabled]
Disables or sets the DRAM ECC mode that allows the hardware to report and
correct memory errors.
[Disabled] Disables the DRAM ECC mode.
[Basic] Set to [Basic] to adjust ECC mode automatically.
[Good] Set to [Good] to adjust ECC mode automatically.
[Super] Set to [Super] to adjust the DRAM BG Scrub sub-item manually.
[Max]
Set to [Max] to adjust ECC mode automatically.
[User]
Set to [User] to adjust all the subitems manually.
Channel Interleaving [XOR of Address bit]
Configuration options: [Disabled] [Address bits 6] [Address bits 12]
[XOR of Address bits [20:16, 6]] [XOR of Address bits [20:16, 9]]
MemClk Tristate C3/ATLVID [Disabled]
Configuration options: [Disabled] [Enabled]
Memory Hole Remapping [Enabled]
Configuration options: [Disabled] [Enabled]
DCT Unganged Mode [Always]
Configuration options: [Auto] [Always]
Power Down Enable [Disabled]
Enables or disables the DDR power down mode.
Configuration options: [Disabled] [Enabled]
Power Down Mode [Channel]
This item appears only when you enable the previous item and allows you
to set the DDR power down mode. Configuration options: [Channel] [Chip
Select]