Mac Pro 5,1 Went from a quad core imac to a dual X5690 tower. I thought video rendering, encoding, converting, photo editing, etc.. would all be much faster with 12 cores. However, according to activity monitor, none of these programs use more than 4 cores. Some only use 2 or 3. None of them have settings to increase core usage. One does, but nothing changes when I change the setting. Using iMovie, Handbrake, Wondershare, WinXDVD, Gimp among a couple of others. What gives? Was this upgrade stupid because nothing uses more than 4 cores?