hi
i too have had problems with 200 x 20
still at 190 x 20 totaly stable

can get 211x 19 to work ok but volts sarting to get high
and still waiting for fuzion 1366 mounting bracket
change mem from corsair xms 1333 to 1600
much better

for icecold 316 the gigabyte ud5 is a very good board
first gigabyte board i have purchased

normal go for asus but no hesitation about recommending this board

cheers