Summary: Have been using this in my gaming PC build for the past eight months or so. It's a great board. I love that it has an ample amount of USB 3.0 ports. I have found that it resisted a short I had as well. I forgot to use a standoff in one location so it shorted against the case. Thankfully everything turned out fine.
Summary: Bought this to replace my Asrock z77 extreme4 mobo, I was hesitant on purchasing the extreme4 based on bad reviews/reliablity and I was one of those unlucky ones that had problems with it. This mobo is a solid buy.
Pros: Overclocking is easy, voltage are stable, BIOS is great, very nicely built, has everything you need, great for its price.
Summary: One year later, the two ram slots nearest the CPU are dead. If any stick of RAM is plugged into either of those two slots, it will not POST. Ran fine for the first year, but I really expected it to last longer than this. Tried upating the BIOS and everything, no dice. Steer clear of this board.
Summary: I really like my the Gigabyte Z77X-UD3H. I received revision 1.2 which is the latest version from Gigabyte which is good as it had the latest bios already installed. Gigabyte has a little sticker on two usb ports which were different from the standard location of where one would normally plug in the keyboard and mouse. I used the ones suggested by Gigabyte to install windows 7 without any issue.
Pros: Good quality
Cons: wish all sata ports were sata 3 and had 2 more internal sata ports
Summary: This board is performing just as expected and I am happy with this purchase. The BIOS is very good and easy to navigate. I installed i3570k, 16GB RAM, H80i and running the cpu at 4.4 on auto voltage and not seeing temps over 61° C. I like the reset/power button on the board. It also has an mSATA 'slot' which I haven't employed yet but may make sense to do so down the line. USB 3.0 is obviously awesome with your USB 3.0 devices.
Summary: This board works very well for the price. It has no problems with bclk clocks that I can see, I haven't gone that high tho. I'm running a 3570k oc'd to 4.3ghz with the bclk at 103mhz with no issues. I chose to increase the bclk in addition to the multiplier for an extra push on the memory etc. The only con I can see if that Gigabyte doesn't offer advanced rma (cross ship) like EVGA and others do.
Summary: performance is really good. It is pushing an i5 3570K cpu with a HD 7870 gpu. Stable and smooth. The bios interface is interesting though. Simple with detailed settings for overclocking. I haven't started over clocking yet, so can't give any comments on it. Board doesn't get super hot. I have a decent air cooling system in place.
Summary: Installed a new Intel Core i5-3570K and 8GB's of ddr3-1600 mhz ram. Not a single issue to report. I didn't even have to reinstall my O.S. (8.1). That was very surprising. Booted right up one 1st try. Gigabyte knows motherboards. I'll always go through them.