Gigabyte GA-P55 UD3R Review
 

First off, I have to say that the GA-P55-UD3R shocked me when I was able to push the i7 870 to almost 4.4GHz. It fell just a tick below, because at a 210MHz bclock it did not want to give me any stability, even at reduced speeds. With that said, a bclock of 209MHz with a 21x clock multiplier proved fruitful and allowed the UD3R to shine. While I had problems going over 1600MHz with a set of dual sided DIMMs on the P55-UD6, I did not have that problem on the P55-UD3R. In fact, the modules scaled above what they have done in the past by a good 40MHz, to 1020MHz. To say I was stoked is an understatement! At this level of performance on air, you can be sure there is more left on the table that can be obtained when you can go for it with improved cooling.

http://www.overclockersclub.com/revi...e_ga_p55_ud3r/