Gigabyte A75M-UD2H Mainstream FM1 Motherboard

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For enthusiasts, the options available within the BIOS/UEFI can turn a good board into 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 users' hands by the manufacturer.

Frequency and voltage options.

Fan control settings.

BIOS Summary: Gigabyte A75M-UD2H
CPU Frequency 100 to 500 MHz
CPU Voltage -0.600V to +0.600V in 0.005V increments
CPU PLL Voltage 2.100V to 2.900V in 0.02V increments
CPU NB VID -0.600V to +0.600V in 0.005V increments
FCH Voltage
0.625V to 1.735V in 0.005V increments
APU VDDP Voltage 0.725V to 1.835V in 0.005V increments
IGP Frequency 300 to 2000 MHz
IGP Memory Size 256MB, 512MB, 1024MB
Memory Clock x5.33, x6.66, x8.00, x9.33
Memory Timing Control Basic
Memory Voltage
1.025V to 2.135V in 0.005V increments
Memory VTT Voltage 0.515V to 1.145V in 0.005V increments
Fan Control
CPU Smart Fan Control Enabled, Disabled
System Smart Fan Control Enabled, Disabled

While the A75M-UD2H lacks a UEFI, its Award BIOS has an option for EFI booting with drives larger than 2.2TB and there are a vast array of frequency and voltage settings that should satisfy both casual and experienced overclockers alike. There are liberal ranges of control available for all the main subsystems (CPU, chipset, memory, and IGP) including undervolting settings.

Unfortunately there isn't any customization that can be done to BIOS fan control. The board can control both fan headers, but the only option available is to have it either enabled or disabled. You can't dictate when it kicks in or how fast it speeds up, at least not until the O/S is loaded at which point you can have software take over, e.g. Gigabyte's EasyTune utility or SpeedFan.

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