Gigabyte GA-A75-UD4H User Manual page 38

IGX Configuration
CMOS Setup Utility-Copyright (C) 1984-2011 Award Software
UMA Frame Buffer Size
Onboard Dual Link DVI
VGA Core Clock control
x VGA Core Clock(MHz)
higf: Move Enter: Select
F5: Previous Values
UMA Frame Buffer Size
Frame buffer size is the total amount of system memory allocated solely for the onboard graphics con-
troller. MS-DOS, for example, will use only this memory for display. Options are: Auto (default), 256MB,
512MB, 1024 MB.
Onboard Dual Link DVI
Enables or disables Dual Link DVI mode. Please note that the DisplayPort, D-Sub, and HDMI ports will
be disabled when Dual Link DVI mode is enabled. (Default: Disabled)
VGA Core Clock control
Allows you to determine whether to manually set the VGA Core clock. (Default: Auto)
VGA Core Clock(MHz)
Allows you to manually set the VGA Core clock. The adjustable range is from 300 MHz to 2000 MHz.
This item is configurable only if the VGA Core Clock control option is set to Manual.
CPU Clock Ratio
Allows you to alter the clock ratio for the installed CPU. The adjustable range is dependent on the CPU
being installed.
CPU NorthBridge Freq.
Allows you to alter the frequency of the CPU North Bridge controller.
Core Performance Boost
Allows you to determine whether to enable the Core Performance Boost (CPB) technology, a CPU
performance-boost technology. (Default: Enabled)
CPB Ratio
(Note)
Allows you alter the ratio for the CPB. The adjustable range is dependent on the CPU being installed.
(Default: Auto)
(Note) This item is present only when you install a CPU that supports this feature.
BIOS Setup
IGX Configuration
[Auto]
[Disabled]
[Auto]
500
+/-/PU/PD: Value F10: Save
F6: Fail-Safe Defaults
(Note)
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Item Help
Menu Level 
ESC: Exit F1: General Help
F7: Optimized Defaults