If you have a question about hopper mechanics, check the page on stationary hoppers first. I posted a question here, moved on to the hopper page and found what I was looking for. Rashkavar 07:13, 21 March 2013 (UTC)
Super Speed?
In version 1.8.7, a hopper minecart beneath any container drains items from that container at a rate of 20 per second as compared to normal hoppers which only do 4 per second. I haven't yet narrowed down exactly when this was introduced, but it's definitely unusual. --Quietust (talk) 18:37, 28 June 2015 (UTC)