Gigabyte I have had one failure, but it was on the super low end and it was an old system to lots of heavy use on a mobo that was probably taxed to it's limits.
I guess some of me not liking them is based on when I worked at Dell... They did a lot of the boards for Dell at the time and some of them where just ass.... Like 20% failure rate on some of them in 2 years. I suspect a lot of it was when all those bad caps got into the supply chain.
At the time Dell was the number one PC seller and popular plus cheap mobo plus bad caps plus going from XP to Vista.... it was just a bad time for the entire PC industry lol
When the memory controller was built into the Northbridge chipset, some old mobos would support like DDR1 and DDR2 RAM at the same time sort of, like you could use either RAM but not at the same time I think?