Board Features

Gigabyte GA-A75-UD4H
Size ATX
CPU Interface FM1
CPU Support Llano - AMD A series and E2 series
Chipset AMD A75
Base Clock Frequency 100.4 MHz
DDR3 Memory Speed 1866 9-9-9
Core Voltage Auto, +0.4 V to -0.6 V offset
CPU Clock Multiplier Auto, 8x to CPU limit
DRAM Voltage Auto, 2.135 V to 1.025 V
DRAM Command Rate Auto, 1T or 2T
Memory Slots Four DDR3 DIMM slots supporting up to 64 GB
Dual Channel
Support for DDR3 2400/1866/1333/1066 MHz
Expansion Slots 1 x PCIe x16 (runs at x16/x0 or x8/x8)
1 x PCIe x8
3 x PCIe x1
2 x PCI
Onboard SATA/RAID 5 x SATA 6 Gbps, Support for RAID 0, 1, 10
Onboard 5 x SATA 6 Gbps
4 x Fan Headers
1 x Front Panel Header
1 x Front Panel Audio Header
1 x S/PDIF Out Header
4 x USB 2.0 Headers
1 x USB 3.0 Header
1 x Firewire/IEEE 1394a header
1 x Serial Port Header
1 x Trusted Platform Module (TPM) Header
Onboard LAN Realtek RTL8111E chip (10/100/1000 Mbit)
Onboard Audio Realtek ALC889 codec
Support for Dolby Home Theater, up to 7.1 channel
Power Connectors 1 x 24-pin ATX connector
1 x 8-pin 12V connector
Fan Headers 1 x CPU Fan Header
2 x SYS
1 x PWR
IO Panel 1 x PS/2 port
1 x D-Sub
1 x DVI-D
1 x HDMI
1 x DisplayPort
1 x Optical S/PDIF Out Connector
2 x USB 2.0
4 x USB 3.0
1 x Firewire/IEEE 1394a
1 x eSATA 6 Gbps
1 x Gigabit Ethernet
Audio Jacks
BIOS Version F6
Warranty Period 3 Years (from date of manufacture)

As expected on a board of this price, the Realtek combo of NIC/Audio is used. I am still amazed that GB put a TPM on their boards whereas no-one else does. I am unsure if demand for such a feature is required on a board like this—I will get in contact with GB and see if there is an official response.

Edit—Apparently GB see a lot of demand for a TPM from those who use it, and they say it is fairly cheap to implement to cover those users.

In The Box

4 x Locking SATA cables (2 right angled)
IO Shield
User Manual
Driver CD

As with most Gigabyte products in this range, we do not see a lot in the box. Focus is more on what is on the board and the warranty it seems.

Software

The driver CD is standard Gigabyte fare, with drivers and programs easily installable with a click each. On the CD, both Norton Internet Security and Firefox 3.5.4 are available for install as well (note, previous ASUS CDs offer Norton and Chrome). The main focus of the software is on @BIOS, a way in the OS to update the BIOS, and EasyTune6, where fan options can be adjusted and the board can be overclocked.

Normally, we would see an array of auto OC options on the main screen of ET6; however on this Llano system these are not available. The tabs in the software are pretty self explanatory, showing CPU, memory and overclock options.

The fan controls are very basic, as they are in the BIOS. Under user mode, the ramp can be adjusted, though there is no applicability for hysteresis or multi-gradient ramping.

Similar to the ASUS board, when using the EasyTune6 software with its sensor capabilities, we see a spike in DPC Latency, around 380 microseconds. With the software turned off, this reduced down to 170 microseconds.

Gigabyte GA-A75-UD4H BIOS and Overclocking Test Setup, Temperatures and Power Consumption
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  • DanNeely - Monday, November 7, 2011 - link

    "It should be noted that, according to the Gigabyte website, the DVI-D does not support D-Sub by adaptor, and that when on integrated graphics, the connector cannot be changed while the motherboard is powered up."

    This sort of no plug and play nonsense is a throwback to the 90s, and has no business on a modern board.
  • Oberst - Monday, November 7, 2011 - link

    This is quite misleading, as both mobos use a DVI-D. So also both do not support D-Sub via adapter, Gigabyte is just the only manufacturer that clearly stresses this issue, all others assume that you know what the difference between DVI-D and DVI-I is.

    Also no word is left, that the gigabyte board is capable of Dual Link DVI, while the asus only allows single link, which enables only a limited range of display resolutions. As Dual Link on Llano boards is not very common, that would surely be some important fact to mention.

    I'm also not quite sure, what gigabyte means with "All integrated graphics ports do not support Hot plug. If you want to change to another graphics port when the computer is on, be sure to turn off the computer first." Maybe just a false translation, meaning you have to reboot the system, when changing the output (as the display driver doesn't switch the output automatically, you have to do that manually in the driver or by rebooting).
  • DanNeely - Monday, November 7, 2011 - link

    It's the no-hotplug part that apalled me, I should've trimmed the 1st part of the sentence away to be clearer but was in a rush for the shower by the time I finished reading the articel.
  • Oberst - Tuesday, November 8, 2011 - link

    I'm not sure if that is really that strict as this statement shows. The Gigabyte translations are often not very good and the real meaning is quite different to the written text.

    When you change your display from DVI to DP, you have to do a reboot as the driver won't switch automatically. That's because you could just pull out a plug by hitting the cable accidentally. So the driver holds the primary output on the plug that was used before, only a reboot initiates a rescan of the displays and switches to another one.

    So maybe gigabyte wanted to express this. That would definitely be something to try out. But i can't imagine that you cannot plug in a second monitor on a running system, that would really be some strange behavior.
  • Googer - Sunday, November 13, 2011 - link

    Use a displayport adapter If you need DUAL LINK DVI connection on the ASUS board.
  • Etern205 - Wednesday, November 9, 2011 - link

    Yea, DVI-D doesn't support DVI to VGA adapter as there is no 4 analog pins on that DVI port. Also even if it doesn't have that 4 pin, the adapter still won't fit as the analog ground (that horizontal pin) on the adapter is a tad wider.
  • Etern205 - Wednesday, November 9, 2011 - link

    My mistake, looks like there is a DVI-D to VGA adapter and it's not the DVI to VGA adapter I was mentioning.

    DVI-D to VGA adapter
    http://www.newegg.com/Product/Product.aspx?Item=N8...

    DVI to VGA adapter
    http://www.newegg.com/Product/Product.aspx?Item=N8...
  • cjs150 - Monday, November 7, 2011 - link

    Really like layout of Gigabyte board. Although this is more of a problem with M-ATX boards I have struggled recently with fitting both graphics card with waterblock and a air cooler over the memory (fits but is incredibly tight) so seeing the PCIEx1 slot above the PCIex16 is a good move.

    What are all those legacy PCI slots doing there? What do people use them for? Across 5 computers at home I use 2 - I for a really old RAID card and one for a TV tuner. Is there really any need for them now?

    Recently I have seen a board with right angled 24 pin ATX socket. Please can this become standard
  • Golgatha - Monday, November 7, 2011 - link

    PCI is for your old sound card. Now if you're building new, there is no need for PCI to exist.
  • Taft12 - Monday, November 7, 2011 - link

    IDE controller, RS-232 card... Me and many like me still need a PCI slot, and Asus and Gigabyte's market research shows the same.

    PCI will still be with us for many years to come yet.

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