Board Features

Gigabyte Z68X-UD3H-B3
Market Segment Performance
CPU Interface LGA 1155
CPU Support Sandy Bridge i3/i5/i7
Chipset Z68
Base Clock Frequency 38.0 MHz to 400.0 MHz in 0.1 MHz intervals
DDR3 Memory Speed 1333 MHz by default, 800-2133 MHz supported
Core Voltage Auto, offset or fixed modes, 0.800 V to 1.800 V in 0.015 V intervals
CPU Clock Multiplier Dependant on CPU
DRAM Voltage Auto, 1.108 V to 2.464 V in 0.007V intervals
DRAM Command Rate Auto, 1T-3T
Memory Slots Four 240-pin DDR3 DIMM slots in dual-channel
Regular unbuffered DDR3 memory
Up to 32GB total supported
Onboard Graphics 1x D-Sub port
1x DVI-D port, supporting a maximum resolution of 1920x1200
*The DVI-D port does not support D-Sub connection by adapter.
1x HDMI port, supporting a maximum resolution of 1920x1200
1x DisplayPort, supporting a maximum resolution of 2560x1600p
Expansion Slots 2 x PCI Express 2.0 x16 slots (x16/x0 or x8/x8)
3 x PCI Express 2.0 x1 slot
2 x PCI slots
Supports ATI Crossfire
Onboard SATA/RAID 2 x SATA 6.0 Gb/s ports supporting RAID 0/1/5/10
3 x SATA 3.0 Gb/s ports (blue) supporting RAID 0/1/5/10
2 x SATA 6.0 Gb/s ports (white) from Marvell 88SE9172 supporting RAID 0/1
1 x eSATA 3.0 Gb/s port
Onboard 4 x SATA 3Gb/s connectors
4 x SATA 6Gb/s connectors
4 x Fan Headers (1x4-pin, 3x3-pin)
4 x USB 2.0 headers support additional 8 USB 2.0 Ports
1 x Front panel switch/LED header
1 x TPM module connector
1 x USB3.0/2.0 header
1 x IEEE 1394a header
1x SPDIF Out header
1x Serial port header
1 x Firewire/IEEE 1394 header
1 x Front panel audio header
1x Clearing CMOS jumer
Onboard LAN 1 x Realtek RTL8111E chip (10/100/1000 Mbit)
Onboard Audio Realtek ALC889 Codec, 2/4/5.1/7.1-channel, Dolby Home Theater, S/PDIF Out
Power Connectors 24-pin EATX Power connector
8-pin EATX 12V Power connector
Fan Headers 1 x CPU Fan (4-pin)
3 x SYS Fan (3-pin)
IO Panel 1 x PS/2 keyboard/mouse port
1 x D-Sub port
1 x DVI-D port
1 x optical S/PDIF Out connector
1 x HDMI port
1 x DisplayPort
4 x USB 2.0/1.1 ports
1 x IEEE 1394a port
1 x eSATA 3Gb/s connector
2 x USB 3.0/2.0 ports
1 x RJ-45 port
6 x audio jacks (Center/Subwoofer Speaker Out/Rear Speaker Out/Side Speaker Out/Line In/Line Out/Microphone)
BIOS 2 x 32 Mbit flash
Use of licensed AWARD BIOS
Support for DualBIOS™
PnP 1.0a, DMI 2.0, SM BIOS 2.4, ACPI 1.0b
Warranty Period 3 Years


EasyTune6 is Gigabyte's take on the monitoring and overclocking software within Windows. When you open the software, the Tuner tab opens by default. It offers three different “Quick Boost” options which are described in greater detail within the overclocking section of this review.

EasyTune6 does pretty much what you’d expect from this kind of software. It tells you everything about your CPU, memory, graphics card(s) as well as providing a hardware monitor and the ability to change your fan profiles.

EasyTune6 allows you to manually set fan profiles within Windows. The default is set at 27% when your CPU is at 20°c and 100% when it reaches 72°c. It increases as the temperature rises in order to try to keep the CPU temperature down. It’s simple really, if the CPU is still getting warmer with increased fan speeds, then the fan isn’t moving enough air so it speeds up more to bring the temperatures down. If all else fails and the CPU reaches 72°c or above, the fan will run at 100%.

When you select the advanced option, you can manually adjust the settings of the two fans that are controlled by the CPU temperature. Unfortunately, you cannot change the speed of the CPU fan and SYS_FAN2 individually - both are controlled by the CPU temperature. SYS_FAN1 and PWR both run at 100%, no matter what. There is no control over those.

You can overclock your system from within Windows. EasyTune6 allows you to change most of the required settings. You can alter the BCLK, DRAM frequency, multiplier and the system voltages.

Visual Inspection and In The Box BIOS and Overclocking
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  • kamiyo - Tuesday, July 12, 2011 - link

    hopefully this will inspire me to upgrade the rest of my rig
  • bas94041 - Tuesday, July 12, 2011 - link

    Why do reviews such as this ignore that which is fundamental to product quality?
    Namely, Customer Support.
    I will never purchase another Gigabyte product as in my experience their support is incompetent and unprofessional.
    Until these tech companies are called out on it they will continue to provide abysmal support. Product reviews should provide a measure of tech support capacity just as they measure a products technical features.
  • just4U - Tuesday, July 12, 2011 - link

    I've played with this board and it's little cousin, the GA-Z68MA-D2H-B3. I've found that both boards are a little quirky almost as though the bios versions are not quite mature. Small little nagging things that are hard to pin down.

    The SSD Caching is an interesting feature. I don't notice a big improvement but it's there for sure... even though the Windows 7 Experience index doesn't show it. If you change hardware frequently then you run into issues as well (or I have anyway) forcing you into the setup utility to disable the cache drive and reset it back up after the fact. Things have gotten better since the last bios update but... not quite there yet. (imo)
  • The0ne - Tuesday, July 12, 2011 - link

    No gimmick, just a great show if you are interested. For the linguist or anyone interested in words and such, the program runs every week on the weekends. I highly recommend it as I listen to them weekly.

    Hope you enjoy them as much as I do :D
  • henhaohenhao - Wednesday, July 13, 2011 - link

    Come go and see, will not regret it Oh look
  • henhaohenhao - Wednesday, July 13, 2011 - link

    Come go and see, will not regret it Oh look
  • Diagrafeas - Saturday, July 16, 2011 - link

    This is from the manual.
    "Please note the HDMI audio output only supports AC3, DTS and 2-channel-LPCM formats."

    Is this correct?
    What about 8-channel LPCM, Dolby TrueHD bitstream, DTS-HD Master Audio bitstream?
  • goodzhang - Sunday, July 17, 2011 - link

    Come go and see, will not regret it Oh look
  • catchmyevo - Monday, July 25, 2011 - link


    Thank you for posting an article for this Motherboard, as it made my decision to buy it. One thing though, I wasn't sure if you had come across this but after upgrading the BIOS from F2 to F4, the option to set ACPI Suspend Type S1(POS)/S3(STR) disappeared. Any ideas as to why they would make a change to fix some issues, but removed a feature that's printed in their manual?
  • Conditioned - Wednesday, July 27, 2011 - link

    First review I read of a motherboard that gives dpc. Thats so great for us who play (and ofc for those that do audio processing).

    For the next review I would like to know:
    Was the system under load as you took those dpc measurements? Listening to music, harddisk usage, anything loading the cpu?
    Was it in 'idle' mode or was it 'clocked' up?
    Where sounddrivers installed? Which ones.
    Was hpet on or off?
    What nic (model and driver version).
    What intel inf version.

    I wonder at these numbers cause I have ~60 microseconds in dpc with my msi z68 gd80.
    I have done two things to lower dpc:
    1) Install brainbits low dpc drivers for my Asus essence
    2) I have timerresolution.exe running which increases the dpc timer resolution thereby possibly decreasing dpc somewhat.

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