I have an Apple iMac 2.66GHZ Intel Core 2 Duo with 2GB ram (Early 2008) 8,1 i'm still using Snow Leopard 10.6.8 Does anyone have experience with this iMac and ML? I use my mac for HD video editing (not professional) And I just want speed/high performance. Is it better and make it things easier if I install Mountain Lion? Does Mountain Lion use more ram? Because I don't want a slow computer, (But maybe I can make it faster to delete something I never use like Dashboard,...?) Is it a good choice to do a clean install and upgrade my ram to 4GB? What should I do? thanks in advance!