CMG is bad elpida hyper filtered SKU so less likely to die
http://i4memory.com/wp/article/703
Dual channel kits can work in triple channel see my
12GB A-DATA 2000X DDR3 testing with 3 kits of 2x2GB dual channel memory - if you lucky all individual modules have same behavioural characteristics if not might need a bit more tuning as I did but it works.