Talk:Dark Elixir Drill/@comment-26193946-20150311195656/@comment-26502475-20150616151050

You're misunderstanding as is the cool nerd. He reaches the right conclusion for the wrong reason. At drill level 1 output is 20 de/hr and the capacity is 160 de. The collector fills in 8 hours. The caveat is if you're not able to regularly empty the drill. Let's say you only check the drill every 10 hours. When you check the drill, it's full with 160 de and stopped collecting 2 hours ago. You have collected 160 de in 10 or 16 de/hr instead of 20 de/hr. Now we upgrade, 2 days later our new drill is producing 30 de/hr and has a capacity of 300 de. The collector fills in 10 hours. Since we're able to check every 10 hours as before, when we check the drill it is full with 300 de and has just now stopped producing. You have collected 300 de in 10 hours or 30 de/hr. Now if we hadn't upgraded, we would have collected the drill 4.8 extra times that we missed out on while it was upgrading (48 hours/10 hours per check). So at the moment the upgrade finishes we're 4.8*160=768 de behind where we would have been. Every ten hours we're collecting 300 de instead of 160 de for a net gain of 140 de every 10 hours or 14 de/hr. At this rate out catch up point is 768/14= approximately 54.9 hours. We have brought the catch up time down from 4 days to just under 2 days 7 hours. So as the caveat states, if we're unable to check the drill regularly, it makes even more sense to upgrade because the catch up point comes sooner.