I have a relatively technical RAM question. I currently have 2 sticks of 4gb 1333mhz rated CL9 ram and 2 sticks of 2 gb 1066mhz rated CL7 ram. I am trying to decide which to put into a mid 2010 15" mbp. That mbp can only take up to 1066mhz ram I believe. If I put the 1333mhz ram in, will it downclock to 1066mhz and become CL7? Or, would it downclock to 1066mhz and remain CL9? I'm trying to decide which sticks of ram to use. Thanks!