I am VERY happy with my blocks. Haven't pushed tooo hard yet, but so far, the MOSFET's haven't passed 37c, RAM at 2400, got some clocking to do so I can push it further, I had enough other stuff to do at home recently, I haven't been back to heavily clocking, but it runs STONE cold. Nate's blocks are top notch. You will not regret the purchase, sop far it did better than either block I had on my X58's over the years (I know its not an apples to apples comparison) this does VERY well.