I have not been a fan of Gigabyte since the GA-N680SLI-DQ6 debacle, which REQUIRED Anandtech to get involved before they even did anything.
If you want to start reading about it:
http://forums.anandtech.com/showthread.php?t=3709
It is 99 pages long (according to my settings), with things getting insane around page 52. I will admit it was not entirely their fault, but they touted it as ready for Penryn (and more specifically 1333 Quad Core support). Gigabyte also essentially discontinued the board within 6 months, and stopped all support well before the warranty even ran out.
Long and short of it, Gigabyte advertised the board with support for 1333 FSB Quad Core CPUs, and Penryn ready. When the first 1333 Quad Core CPUs are released a month or two later, they all do not work on the board. Gigabyte then start updating their CPU support page specifically denying that it supports the 1333 Quad Core CPUs (like the QX6850), and then when the Penryn CPUs start coming out, changes that it does not support them either, even though they specifically stated that they would be supported as they still used the same socket, and where going to be 1333 bus (as their board support "1333 Quad Core" CPUs already).
Several of the other boards out there did work fine with the QX6700 and QX6850 1333 quad CPUs (like the MSI board). Gigabyte's board failed, and yet they wanted to do nothing to fix the issue for their customers. EVGA's board also failed, but they stepped up to the plate and started replacing all their 680i boards with the 780i boards which came out just as all the problems with the 1333 FSB chips were happening. Gigabyte simply was denying the whole thing as their problem. We even had to send pictures of the BOX that the motherboard came in showing that it specifically said 1333 Quad Core support! And then they were still denying that it was a problem by saying that the "see website for complete list of supported CPUs", even though that the BIG IN BOLD lettering said it specifically supported 1333 Quad Core CPUs, when not a single one worked.
Anandtech actually put up an article threatening to specifically called Gigabyte out. And even then, Gigabyte still was not going to do anything. After 4 or 5 months after EVGA and other board makers already had replacement programs to RMA the 680i chipset boards for new boards which would do what was advertised, Gigabyte still was denying they had to do anything. Finally after they reluctantly created a replacement plan, they were requesting that people who send in the receipts for QX6850 CPU before they would agree to replace the board! Finally Gary Keys' and Anandtech's pressure on them got them to cave in, and do something for their customers. I personally had already replaced my board with an EVGA 780 by then since Gigabyte was screwing us over. I did get mine replaced, and I upgraded my HTPC with it, but I will never buy a Gigabyte board again until they fix their customer service. It shouldn't have taken 6 months for them to do anything. They should have offered replacements or refunds immediately.