You might want to qualify that. As I mentioned earlier, a quad-core 2.66 GHz Q8400 was not powerful enough to transcode blu-ray rips on the fly, although it was borderline. It actually worked perfectly fine for many rips, but occasionally struggled for others. Maybe with a little less overhead on my WHS 2011 server it would have sufficed, but I think a more recent core i processor gives you more headroom, particularly if there's a chance you you'll be transcoding more than one movie at a time. The i5-3570k for instance can transcode 3 blu-ray rips simultaneously at 80-85% CPU usage. It's kind of amazing CPU power has more than tripled in a relatively short time.