Armor Question

Comment below rating threshold, click here to show it.

epicgenic

Junior Member

12-06-2009

Could someone enlighten me of the way armor works?

  • How much does, say, 10 armor contribute to the physical damage reducer %?
  • The more armor you have, the less effective it is? Or it is possible (not that one would) to reach close to 100%? Is there then be a point where it is no longer worth it to buy armor?


Comment below rating threshold, click here to show it.

wildfire393

Senior Member

12-07-2009

Physical Damage reduction = Armor / (100+Armor)

Ditto for Magical Damage reduction and Magic Resist.

While percentage-wise, this is diminishing returns (100 armor gives you 50% reduction, 200 Armor gives you 33%, 300 gives you 25%), in reality it works out to be a flat modifier.

For every point of armor you have, it takes 1% more damage to kill you. So if you have 1000 HP and 100 Armor, it takes 100% more damage (2000 damage, 50% of which is 1000) to kill you. If you have 200 armor, it takes 200% more damage (3000 damage, 33% of which is 1000) to kill you. Etc.

It is not possible to reach 100%. The closest you could get would be taking Rammus at level 18 for 89 base armor, using his level 5 Defensive Curl ability for +150 Armor, then stacking 6 Frozen Hearts (the largest armor item in the game) for another 660 armor. This gives a total of 899 armor, which gives 89.99% damage reduction. Maximum MR is lower, as the highest MR item is 80, and Rammus (who still has the highest possible with his +150) only ha 30 MR instead of 89 base armor. However, with the 660 MR you can get, you still get 86.84% damage reduction.

As for when it is not worth it to get Armor, you have to do some calculations based on your current level of armor and your HP. Since armor effectively expands your HP (against that kind of attack), you can figure out if it would be more worth it to buy more armor or more HP. Say you have 1000 HP and 100 Armor. Your effective HP is 2000 (vs physical). If you add another 20 armor (Cloth Armor), your effective HP goes to 2200. If you add another 200 HP (ruby crystal), your effective HP goes to 2400. Health is already looking better, especially if you're facing down mixed attackers. Now let's say you have 1000 and 200. Your effective HP is 3000. Adding a cloth armor brings that to 3200. Adding a Ruby brings it to 3600. The more armor your have, the better HP is. Conversely, if you have 3000 Base HP and only 50 armor, your effective HP is 4500. Adding a cloth armor at this point brings your effective HP to 5100. adding a Ruby Crystal only brings it to 4800.


Comment below rating threshold, click here to show it.

epicgenic

Junior Member

12-07-2009

Thanks a lot! They should have a rep system here.