Gigabyte GA-890XA-UD3 User Manual page 40

Memory Clock
This option is configurable only when Set Memory Clock is set to Manual.
X4.00 Sets Memory Clock to X4.00.
X5.33 Sets Memory Clock to X5.33.
X6.66 Sets Memory Clock to X6.66.
X8.00 Sets Memory Clock to X8.00.
DCTs Mode
Allows you to set memory control mode.
Ganged Sets memory control mode to single dual-channel.
Unganged Sets memory control mode to two single-channel. (Default)
DDR3 Timing Items
Manual allows all DDR3 Timing items below to be configurable.
Options are: Auto (default), Manual.
CAS# latency
Options are: Auto (default), 4T~12T.
RAS to CAS R/W Delay
Options are: Auto (default), 5T~12T.
Row Precharge Time
Options are: Auto (default), 5T~12T.
Minimum RAS Active Time
Options are: Auto (default), 15T~30T.
1T/2T Command Timing
Options are: Auto (default), 1T, 2T.
TwTr Command Delay
Options are: Auto (default), 4T~7T.
Trfc0 for DIMM1
Options are: Auto (default), 90ns, 110ns, 160ns, 300ns, 350ns.
Trfc2 for DIMM2
Options are: Auto (default), 90ns, 110ns, 160ns, 300ns, 350ns.
Trfc1 for DIMM3
Options are: Auto (default), 90ns, 110ns, 160ns, 300ns, 350ns.
Trfc3 for DIMM4
Options are: Auto (default), 90ns, 110ns, 160ns, 300ns, 350ns.
Write Recovery Time
Options are: Auto (default), 5T~8T, 10T, 12T.
Precharge Time
Options are: Auto (default), 4T~7T.
Row Cycle Time
Options are: Auto (default), 11T~42T.
RAS to RAS Delay
Options are: Auto (default), 4T~7T.
BIOS Setup - 40 -