Hello! I would like to update my mid 2009 (last version before unibody) MacBook with two 800 MHz DDR2 SoDIMM modules to 4 GB total. I see offers of noname modules but they are all CL6. Although one of the seller claims they work in the MacBook, I had problems in various desktops with CL6 DDR2 memory. It seems CL6 does not really work for DDR-2.