Gigabyte A75M-UD2H Mainstream FM1 Motherboard

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USB 3.0 Performance

AMD's new native USB 3.0 controller has an advantage over third party controllers found in Intel boards. A large file transfer from a USB 3.0-connected WD VelociRaptor 600GB to a SATA-connected WD Caviar Black 2TB was 4 MB/s faster than the Renasas controller in the Asus P8H67-I Deluxe and 18 MB/s faster than the VIA controller in the Zotac H67-ITX. Not only was it faster, there was very little overhead as a SATA to SATA transfer was only 0.3 MB/s faster. This is as close as it gets to "full" USB 3.0 performance.

Boot Time

To test boot time we optimized the BIOS menu (hard drive and other delays set to minimum) and measured the time it took to reach the Windows loading screen (we stop here because this is the point where the O/S drive speed becomes a factor).

The A75M-UD2H edged out P67 motherboards from Gigabyte and Asus but couldn't match the swiftness of H67 mini-ITX models which tend to have a faster POST/boot sequence.

Fan Control

Fan control via EasyTune.

The BIOS can control two fan headers with both 3-pin and 4-pin fans, but only the CPU fan adjusts dynamically. Our observations match the default settings described in EasyTune application, which shows the CPU fan starting at 28% speed at a CPU temperature of 20°C, and rising linearly to full speed at 66°C. Using EasyTune, the speed can be lowered to a minimum of 10%. The same cannot be said for the System fan header which runs fans connected to at about 60% speed whether the CPU temperature is 0°C or a 100°C.

SpeedFan screen with correlations inputted.

The latest beta version of SpeedFan plays well with the A75M-UD2H, offering more functionality than both the BIOS and EasyTune. Full control of both headers can be unlocked by changing the PWM modes to "Software controlled" under the IT8720F chip in the Advanced menu. Speed01 and Speed02 adjusts the fan speed by varying the voltage while Speed03 will control the CPU fan using PWM.

SpeedFan has two functioning temperature sensors, one for the CPU and one for the FCH which correlate to the same values in the BIOS and EasyTune (FCH is labeled "System" instead).

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