I ordered 4 8GB sticks of Crucial's memory. This: http://www.amazon.com/gp/product/B008LTBJFW/ref=oh_details_o01_s00_i00 I did not receive my new iMac yet. I do wonder if low power memory (DDR3L) differs from the non-lower power RAM. Is there ANY difference other than power usage? The clock speed is 11CL, so everything spec-wise matches the type of RAM Apple uses in these new iMacs.