ahh.. the fly in the ointment. the monkey wrench. the "but . . ". Yes, that could be potentially a spoiler, but I'm not convinced that there is much to see here by upping specs on the ram.
Do correct me if I am wrong, but running at the same voltage and amperage, I don't see how they would produce more heat, even at higher frequencies. From my understanding, the higher frequencies are a result of better binned parts, and nothing more.
Also, do we have any numbers on the speedups with 2133mhz/11?