When a monster dies, the first thing we do is decide whether it's going to drop loot at all.
Most monsters -- like say your everyday shambling zombies -- have a roughly 30% chance to drop loot. The exact percentage, however, varies from monster to monster (for example, the Tormented Stingers in Act III have a much lower chance because they spawn in large packs and are easy to kill).
When you kill a monster in Inferno on MP1 or higher, if you pass the initial roll to obtain loot, you will also get a second roll to get an additional piece of loot. The "bonus item" chance for each MP level is detailed [url="https://bnetcmsus-a.akamaihd.net/cms/content_folder_media/FPA71EB165JZ1349891151345.jpg?v=0"]here[/url]. A few monsters are exempt from the bonus loot, but we tried to put it on the vast majority of normal monsters, and will probably add it to more if we like how the system plays out.
Also, just to be clear, the bonus drop applies to Normal monsters only. We wanted Monster Power to provide players with extra loot rolls, and (since Champions and Rares are already guaranteed to drop multiple items) Normal monsters seemed like the best place for us to add that mechanic in.
Sorry blue, i dont think it details it at all on your link, unless i am mistaken.
It doesnt even say inferno on it, and nowhere does it list bonus chance.
Thanks for the explaination though, i appreciate it!
Look at this link
Bonus item row.
I really think this is a very big or even huge bonus. Imagine there are 20 white mobs on the screen. In MP10, you are guaranteed to get 20 drops. With high MF, lots of them will be rare or even legendary. Imagine thousands of thousands white mobs in each act. You may get thousands of rare in MP10 each run. I am not sure whether I understand it correctly.
If a white mob guarantee a drop in MP10, considering the number of white mobs, we may get tons of lv 63 rare and many legendaries each run.