MacBook Pro 15" too slow after logic board replacement
Hello,
I have a macbook pro 15" mid 2009 and i've replaced my logic board. Before the upgrade i have a logic board with a core 2 duo 2.53 GHZ (4gb RAM and no dedicated graphic card). After the upgrade i have a logic board with a Core 2 Duo 2.66GHZ (4gb ram and a 9600M GT graphic card). I haven't replaced anything else. I have the same HDD with the same OS X install as i have before. But now my macbook pro is too slow some times. For example after opening a folder, the preview of the images is too slow. And crash many times.
I have to do a clean install to my macbook pro for everything works fine?
PS: I also see that my memory ram is almost close to the max value (4 GB).
MacBook Pro, OS X Yosemite (10.10.1)
Questa è una buona domanda?