I installed it on my 13 "MacBook Pro Core 2 Duo mid-2009 after adding 4GB more RAM. The result is virtually the same speed as a laptop PC as well i7 setup! That is, Quality OSX ... My Pictures and videos are held on an external drive and all is saved as another external drive for OSX. I can not conceive over a laptop today without an SSD all the data can be stored in the cloud. five terabytes are available with a familiar desktop solution ... The heart of the market is at 256 ° G Beyond and given the above, it is luxury.