Have long toyed with the idea my, with 8GB not bad equipped upgrading Macbook Pro 15 "(2011), since I memory-hungry software (Parallels, Aperture, Office, etc.) used and the hosts rarely down ride - so only in the standby Be moved. In the meantime I can my hesitation not understand. The almost 100 are quite a gift, the time simple very low and the installation. Now I can work safely with the software I need to have to do without me about missing memory thoughts. My Macbook I have the same breath nor a Samsung 830 Series SSD 512MB donated and can now say without exaggeration that it is a rocket !!!