It use to take about 24 hours to do what today's average system can do in 2 hours.
Man, just think about all the math Handbrake needs to do in order to do its thing. Today people throw around Gigabytes like the Pentagon throws around Gigabucks. A single DVD can contain up to 9GB of data, that is 9,000,000,000 one's and zero's, and in just a few hours your Mac can read and intelligently reprocess all of them. NINE BILLION!!! Nine billion seconds = 285 years! The moon is around nine billion inches away from the earth! Three fully-loaded aircraft carriers weigh nine billion ounces! Think about exactly what Handbrake is doing in a couple of hours next time you're stoned, it boggles the mind.