Mods That DECREASE Efficiency

[Repiru]

I've been told that when you have a max blind rage you get 45% efficiency without any other efficiency mods. Is there any other mods that decrease efficiency?

[Xerenova]

Blind Rage at maxed gives you a -55%. No other mods will give you a negative efficiency.

[(PSN)Onder6099]

Melee Channeling mods

[AlphaSierraMike]

Technically, only Blind Rage gives -power efficiency.

Although keep in mind that channeling abilities' energy efficiency are also affected by duration.

[Repiru]

43 minutes ago, AlphaSierraMike said:

Technically, only Blind Rage gives -power efficiency.

Although keep in mind that channeling abilities' energy efficiency are also affected by duration.

What do you mean?

[Bibliothekar]

16 minutes ago, Repiru said:

What do you mean?

Channelled abilities (those with no fixed duration - switch on and forget) calculate their energy drain from both power efficiency and power duration. I.e. the higher your duration, the less energy they need. So if you e.g. put Transient Fortitude on Ember and use World on Fire, it'll eat through your energy way faster (unless you balance it with Primed Continuity).

[AlphaSierraMike]

16 minutes ago, Repiru said:

What do you mean?

Power duration affects the efficiency of channeling abilities, like Exalted Blade.

So for example, assuming your efficiency stat is unchanged, let's say an ability drains 5 energy per second, if you have 200% duration, the drain would be 2.5 energy per second, effectively having +50% power efficiency which halves the energy usage.

The opposite is also true, if you have 50% duration, your energy drain would be 10 per second, effectively having -50% power efficiency which doubles energy usage.

But it's capped at 25% overall for both sides so you can't go past 0.25x energy usage or 1.75x energy usage.

Check this page out if the explanation is a bit confusing.

http://warframe.wikia.com/wiki/Power_Duration