Hi -
I like Handbrake and have been using it for years, but I'm not sure how best to answer your question. This is a trade-off between cost and speed.
Performance will be based on a combination of the number of cores/hyperthreads and the clock speed of your CPU. I guess the final analysis depends on your budget and how long you want to wait for each re-encoding.
I'm still running an i7-920 (with no overclocking), and personally I like to load up the queue in Handbrake and then let my machine run overnight. I can easily re-encode 20 to 30 hours of video overnight.
I've played with this setup, and I can offer a few observations:
o Turning off the hyperthreads slows down the process
o Overclocking just a little bit gives me a...