Answer to: RAM upgrade from 1066 to 1333 MHzI put a pair of 4GB DDR3-1333 SODIMMS from my dead MacMini mid 2011 in my Late 2008 Macbook 13" Unibody Aluminum (1066Mhz) and they seem to work fine. I reset the PRAM and the system boots properly, all 8GB of memory is properly recognized for OS X 10.10.5 Yosemite and Photoshop CC2015.5... YES!!!! WORKS!!!!