So I made a previous post regarding whether the RAM issues in the Unibody MacBook have been resolved or not: http://forums.macrumors.com/showthread.php?t=692653 It seems that most people who bought OCZ ram have had no issues what so ever. I am located in Canada so a store like CanadaComputers is great for me because I can go pick it up instead of having it delivered and pay shipping costs (as opposed to Newegg.ca). On their website, they have two modules with similar specs expect one is found in the Apple ram section and the other is in the regular ram. Apple Ram (OCZ) http://canadacomputers.com/index.php?do=ShowProduct&cmd=pd&pid=023180&cid=RAM.188 Regular Ram (OCZ) http://canadacomputers.com/index.php?do=ShowProduct&cmd=pd&pid=019880&cid=RAM.187.778 When comparing the specs, the only difference I can see is that the CL on the Apple ram is 7-7-7-20. The CL on the regular ram is CL 8-8-8-27. The price difference between the two is $57! OCZ's website confirms that one is made specifically for Apple Notebooks and the other is just regular. Can anyone explain what CL is and whether it is something that needs to be taken into consideration. Thanks.