Just tested my ram on this board for the 1st time today, i have 2 sets of corsair dominator gt:

1. Corsair Dominator GT 3x2GB 1600mhz 7-7-7-20
2. Corsair Dominator GT 3x2GB 2000mhz 8-9-8-24

The 1600mhz set runs like a dream on the R3E, it runs 1900mhz 7-7-6-18 without any problems, im sure it can do better but im still testing.

But the 2000mhz set won't even run the SPD settings does anyone know why this is, am i doing something wrong? which settings should i try?