In line with what everyone else has said the extra:
- While it’s likely that you have done it by now, the reason to destroy the puzzle ring early, is to radically increase your gold and get the gem ‘Boon of the Hoarder’ on killing Greed for the first time.
EDIT:
Have a look at Perusoe’s levelling guide for next season and check the link in it to the levels where legendary’s drop in D3 planner. There you can work out when the better time is to open a portal. Greed rarely fails to drop a legendary unless too early - you are more likely to get the poison pants if too early. So if you time it right, around the level where what you may want is around the level you are at, your odds of something decent dropping are better.