Dual channel vs single channel RAM update

I have not seen any updated information on this topic since the excellent 2007 article here:

http://www.tomshardware.com/reviews/PARALLEL-PROCESSING,1705-3.html

I just wonder if things have changed since the 65nm Conroe based Core2Duo and DDR2 800 days. With todays fastest RAM having roughly 3 times the clockspeed of the memory used in the article it would be interesting to see if the need for bandwidth has changed.

I would also like to see if there are differences across the different architectures.
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  1. Bump for similar interest. I'm curious to see if DDR3/new architecture/better memory controllers have widened the performance gap between single channel and dual channel.
  2. i (also) seek answer for da same.

    any opinion???
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