2012-09-17, 11:33 AM
Quote:Effective HP (EHP) - The amount of attacks, represented as raw damage, that is required to kill you. Since there are two components to surviving versus a particular type of damage (except true damage), effective HP is the result of the combination of those two defensive stats. Of the two, armor/MR is a multiplier effect, and is almost always better to build. However, since a team is likely to have both physical and magical types of damage, it's not particularly wise to stack up on EHP of one type too much. Building health adds to the EHP vs. physical and magical damage.
There's a chart somewhere that shows when armor/MR vs HP becomes even or better for one or the other. I can't seem to find it though. It was some big image with a ton of useful charts e.g. CV spots, ignite/smite damage, total minions by X minutes + gold, etc