SHAFT Brazil: Did you notice if RealTemp reported your multiplier steady at 21.0 while testing? Your core voltage is nice and low so that isn't likely to cause any Turbo throttling but with a Maximum core temperature of 80C, you are right on the edge of Turbo throttling starting to happen due to heat. With your present settings combined with a higher stress program like LinX, your temps would go up and I'm pretty sure your multi would start to throttle down to 20.0.

In normal usage, this will probably never be an issue for you. Nice OC at low volts.