Originally Posted by mosfetx
Planning on building a new machine soon, z87x-ud3h and 4770K. I just have a couple of questions about the motherboard:
1) I heard that the z87x-ud3h have high DPC latency, is this true? Or was it just an issue with early bios?
2) I heard that there is a problem with the motherboard where the usb devices keeps turning off and on at some points? This is my major concern... I've always used Asus motherboards and they're very reliable and stable. Is this problem real with the z87x-ud3h?
That's all about it, I like everything else about the mobo, it really fit my needs.
Would appreciate any feedback on the above 2 issues.
1. I looked into this a bit, sounds like a firmware issue rather than board issue (gigabyte is known to be a bit rough with bios on launch compared to others), but they are always quick to update bios and do tons of updates (z77 is still getting tons of awesome updates). I downloaded DPC Latency checker, now i dont know if theres somethign I should be doing that stresses DPC, but jsut running it now, it's never going above 300us (ie well below the green line limit).
2. USB 3.0 has always been a bit buggy, not just with gigabyte, and these issues have been fixed from what I know and experience.
You should read sin z87x-ud3h review: http://www.overclock.net/t/1415999/the-gigabyte-z87x-ud3h-full-review-everything-you-need-to-know-about-the-z87x-ud3h
In short, the ud3h is so far above and beyond any other non-gigabyte board below the $200 price point (bear in mind you can get this board for as low as ~$100), that unless you NEED a high end board because you do intense high end Hynix MBR benching on LN2 (the major difference of high end vs mid end boards is better RAM overclockability, as in more bios access and better tracing for extremely minor tertiary timings you've never heard of), it's dumb to buy anything other than this board. It's literally a $200 board for $100, nothing even close to it in price comes close to competing with it.
Gigabyte also updated the ram slots on all their board with t-topology, which was the major reason why Asus > Gigabyte on Z77's higher end boards (ie extreme ram overclocking). Gigabyte's VRMs are by far the best in the business right now, far better than Asus, especially when it comes to value. As far as high end boards where BIOS configuration for ram overclocking and LN2, and RAM overclockability this generation, is at, I'm not too sure, but at the sub-$200 price level where VRM quality is the limiting factor to overclocks, gigabyte is far better.
That said, the asrock z87 OC flagship mATX board is a really solid sub-$200 choice that I'd consider a step up. Asrock is known for really low quality, but this is their flagship board, and it's almost the same price as the UD4H. As a flagship board it's got a lot of great ram overclockability, so that's a good choice to consider too if you are that kind of user.