This guide is based on the original guide from the official website. Please enhance and add things you think are missing!
Item Power, often shortened to IP, is a value assigned to gear pieces, such as armor, weapons and accessories, to measure their strength. An increase in item power will improve most (all?) of an item's flat bonuses, though percentage bonuses are unaffected. The magnitude of this increase is described a bit in this forum post by Korn.
Determining Item Power
There are 8 tiers of gear. Each tier adds to an item's IP based on its type.
There are 3 types of enchantments: uncommon, rare, and exceptional, which are often known as .1, .2, and .3, respectively.
For normal gear, uncommon and rare enchantments add 100 IP, while exceptional enchantment adds 80 IP. For artifacts, enchantments don't add as much IP and differs from each type of artifact.
There are 5 different item qualities and each gives a higher bonus to the overall IP:
|Quality||Item Power Bonus|
Item Power Softcap
The item power softcap makes sure everyone is playing on an equal footing in safe and yellow zones.
In order to keep players in lower tier zones on an even playing level, safe and yellow zones both have an item power softcap. The power of your items is decreased if the item power exceeds the softcap in a zone:
- Safe Zone softcap: 700 IP
- Yellow zone softcap: 800 IP
Each 100 IP above the softcap is multiplied by a factor of additional 0.7.
As an example, we will take an item with 1000 IP and see what happens to it in a safe-zone:
- 1000 IP = (700) + (100 x 0.7) + (100 x 0.7 x 0.7) + (100 x 0.7 x 0.7 x 0.7) = 853 IP effectively
In a yellow zone, an item of 1000 IP would have:
- 1000 IP = (800) + (100 x 0.7) + (100 x 0.7 x 0.7) = 919 IP effectively
A comparison between item power of different tiers in different zones:
|Tier||No cap||Yellow zone||Safe zone|
As seen in the above table, the item power is exponentially reduced if the value is above the softcap. While wearing higher tier items still has some benefits, they become more and more marginal in safe- and yellow-zones.
The infamous Item Skills & Spreadsheet by Elsa should help fill some knowledge gaps, until a better article is completed.