Gigabyte GA-EP41-UD3L User Manual page 39

Trd2rd(Different Rank)
Options are: Auto (default), 1~15.
Twr2wr(Different Rank)
Options are: Auto (default), 1~15.
Twr2rd(Different Rank)
Options are: Auto (default), 1~15.
Trd2wr(Same/Diff Rank)
Options are: Auto (default), 1~15.
DIMM1 Clock Skew Control
Options are: Auto (default), +800ps~-700ps.
DIMM2 Clock Skew Control
Options are: Auto (default), +800ps~-700ps.
DDR Write Training
Allows you to determine whether to fine-tune memory parameters to enhance memory compatibility.
Auto Lets the BIOS decide whether to enable this function. (Default)
Disabled Disables this function.
Enabled Enables this function to enhance memory compatibility.
Channel A/B Driving Settings
x Driving Strength Profile
x Data Driving Pull-Up Level
x Cmd Driving Pull-Up Level
x Ctrl Driving Pull-Up Level
x Clk Driving Pull-Up Level
x Data Driving Pull-Down Level
x Cmd Driving Pull-Down Level
x Ctrl Driving Pull-Down Level
x Clk Driving Pull-Down Level
higf : Move Enter: Select
F5: Previous Values
Driving Strength Profile
Options are: Auto (default), 667MHz, 800MHz, 1066MHz, OC-1200, OC-1333.
Data Driving Pull-Up Level
Options are: Auto (default), +8~-7.
Cmd Driving Pull-Up Level
Options are: Auto (default), +8~-7.
Ctrl Driving Pull-Up Level
Options are: Auto (default), +8~-7.
CMOS Setup Utility-Copyright (C) 1984-2009 Award Software
Channel A/B Driving Settings
+/-/PU/PD: Value
F6: Fail-Safe Defaults
Auto
Auto
Auto
Auto
Auto
Auto
Auto
Auto
Auto
F10: Save
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Item Help
Menu Level 
ESC: Exit F1: General Help
F7: Optimized Defaults
BIOS Setup