Well good to know that you have memory to compare.
1s could be shaved by using 4 modules, which due to the fact they are single sided should run easy...
Anyway IC's released in 2012 by Micron are very interesting, too bad they have small publicity(almost none) and they are not wide available.
Micron bought Elpida from what i remember last year too, so they have some knowledge from there too.

I hope they continue in making new IC and someting special for Haswell to...