I'm looking for a new proc for my Asus-Sli deluxe mobo and wanted to know which of these similarly priced items would be better. I'm going to be doing a lot of audio and video encoding and is why I wanted to go with a proc with a larger cache. With out overclocking I would guess that the x2 4400 would be the better choice but with overclocking would the opteron 165 be better?