Which Intel chip does hardware transcoding?

Hi, I am looking to get a QNAP NAS, I am wondering which intel CPU would work very well with hardware transcoding. I am looking for one that has least CPU impact. Are all Intel i3, i5, and i7 capable to do hardware transcoding? What about CPU utilization impact with these chips?

\Thanks

Yes all new Intel chips come with QuickSync. Usually about 10-15% cpu utilization for video compression.