Highly unlikely, with no Ivy bridge EE on the board Intel will just stick on a locked top multiplier and have done with. As for games, without a clock advantage, how exactly is Ivy bridge going to beat a CPU with more cache same architecture and twice the memory bandwidth?
Dimm layout isn't that big a issue, it's just the easiest way to have all the traces a similar length. Anyway on a platform that high end you'd probably have a case with a top mounted fan anyway.
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