AMD's 890GX Chipset in Gigabyte 890GPA-UD3H

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For enthusiasts, the options available within the BIOS can make a good board, a great one. The ability to manipulate frequencies, voltages, and fan control settings vary depending on the hardware and the amount of trust placed in the user's hands by the manufacturer.

"M.I.T." menu.

"PC Health Status" menu

BIOS Summary: Gigabyte 890GPA-UD3H
CPU Frequency
200MHz to 500MHz
CPU PLL Voltage
2.220V to 3.100V in varying increments (2.500V default)
NB Voltage
0.900V to 1.600V in varying increments (1.300V default)
NB/PCIe/PLL Voltage
1.450V to 2.100V in varying increments
-0.600V to +0.600V in 0.025V increments
CPU Voltage
-0.600V to +0.600V in 0.025V increments
Memory Clock
x4.00, x5.33, x6.66, x8.00
DRAM Voltage
1.275V to 2.445V in varying increments
DDR VTT Voltage
0.720V to 1.050V in varying increments (0.750V default)
Memory Timing Control
Integrated Graphics
Internal Graphics Mode
Disabled, UMA, SidePort, UMA+SidePort
UMA Frame Buffer
Auto, 128MB, 256MB, 512MB
VGA Core Clock
200MHz to 2000MHz (700MHz default)
SidePort Memory Clock
667MHz to 2000MHz in varying increments (1333MHz default)
SidePort Memory Voltage
1.370V to 1.750V in varying increments
Fan Control
CPU Smart FAN Control
Disabled, Enabled
CPU Smart FAN Mode
Auto, Voltage, PWM
System Smart FAN Control
Disabled, Enabled

The BIOS allows for as much frequency/voltage modification as one would expect on an enthusiast board. Settings for all the main components (CPU, chipset, memory, IGP) have liberal limits and a CPU voltage offset can be applied without disabling Cool'n'Quiet. It seems that two of board's fan headers can be controlled, but you cannot define their behavior/tolerances in the BIOS.

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