So I bought a 5K iMac last week and just got the ram today. Got GSkill 1600mhz 8GB sticks. Needed more than 8gb but didnt need a full 32, so I added the 8gb sticks to the 2 4gb sticks for a total of 24gb. Booted fine and sees all 24gb, but its only registering at 1333mhz instead of the 1600mhz I would expect. Did I miss the boat and the latency difference cause the ram to clock down so they can match? Or am I missing something else?