Gigabyte GA-MA790GP-UD3H User Manual page 41

CPU Clock Ratio
Allows you to alter the clock ratio for the installed CPU. The adjustable range is dependent on the
CPU being used.
CPU North Bridge Freq.
Allows you to alter the memory controller frequency for the installed CPU. The adjustable range is
dependent on the CPU being used.
CPU Host Clock Control
Enables or disables the control of CPU host clock. Auto (default) allows BIOS to automatically
adjust the CPU host frequency. Manual allows the CPU Frequency (Mhz) item below to be
configurable. Note: If your system fails to boot after overclocking, please wait for 20 seconds to
allow for automated system reboot, or clear the CMOS values to reset the board to default values.
CPU Frequency (MHz)
Allows you to manually set the CPU host frequency.
Important It is highly recommended that the CPU frequency be set in accordance with the CPU
specifications.
PCIE Clock (MHz)
Allows you to manually set the PCIe clock frequency. The adjustable range is from 100 MHz to
200 MHz. Auto sets the PCIe clock frequency to standard 100 MHz. (Default: Auto)
VGA Core Clock control
Enables or disables the control of VGA Core clock.
VGA Core Clock (Mhz)
Allows you to manually set the VGA Core clock. The adjustable range is from 200 MHz to 2000 MHz.
This item is configurable only if the VGA Core Clock control option is enabled. (Default: 700)
Set Memory Clock
Determines whether to manually set the memory clock. Auto lets BIOS automatically set the
memory clock as required. Manual allows all clock control items below to be configurable.
(Default: Auto)
Memory Clock
This option is configurable only when Set Memory Clock is set to Manual.
When you use an AM2 CPU:
DDR 400
DDR 533
DDR 667
DDR 800
When you use an AM3/AM2+ CPU:
X2.00
X2.66
X3.33
X4.00
X5.33
DCTs Mode
(Note)
Allows you to set memory control mode.
Ganged
Unganged
(Note) This item is present only if you install a CPU that supports this feature.
(Note)
Sets Memory Clock to DDR 400.
Sets Memory Clock to DDR 533.
Sets Memory Clock to DDR 667.
Sets Memory Clock to DDR 800.
Sets Memory Clock to X2.00.
Sets Memory Clock to X2.66.
Sets Memory Clock to X3.33.
Sets Memory Clock to X4.00.
Sets Memory Clock to X5.33.
Sets memory control mode to single dual-channel.
Sets memory control mode to two single-channel.
- 41 - BIOS Setup