Speed Incalculable (Armor has enough Speed to Fight with beings that have certainly incalculable Speed Such as Galactus, Dormammu, Shuma Gorath, Phoenix and Dark Phoenix and Doctor strange (than can move so fast that time in relation to it stops).

Durability Armor is strong enough to withstand attacks from Beings Such as Galactus,Dormammu and his Flames of the Faltine (Dormammu also stated that it is able to destroy the flame that it is capable To Destroy (Celestials.) (Celestials can easily withstand attacks which are capable of easily destroying Multiverse) and even take some hits from Dormammu (within Dark Dimension), Phoenix and Dark Phoenix, Shuma Gorath.).

Possibly armor is at least on the same level as previous armor which was capable of defeating Thanos with Infinity Gauntlet (Gauntlet power surpases even beings such as Eternity). Jean Grey very easily able to keep in the hands of the universes and also (Phoenix existed in oblivion before all things, and hardly even Multiversal attacks, it can be destroyed, as otherwise it will be reborn in a white room) and Shuma Gorath and Doctor Strange (Doctor Strange fights and superior in strength beings from higher dimensions in which their powers are absolute and even fight on pair with Mistress Death and resist the Living Tribunal). And perhaps he has power in Multiversal scale.

Phoenix is so powerful that he is able to destroy the universes. Control of space, time, matter, energy, reality. (Phoenix gives cosmic forces on an unimaginable scale. Limbo into nothingness between all things, guardian and guide all of psionic energy in all creation that has been, is and will be. He has great power, and power capabilities. Strength incalculable (Armor strong enough to knockout Galactus (Cosmic entity of Equity, Subling of Eternity and other and Cosmic Entities and Fight equally and win with beings Such as Dormammu who is considered more powerful than Lucifer, Marduk, Mephisto and Satannish and who is Capable of Fighting even With Eternity while the whole planet burned by their battle After their battle, both considered to be a long time dead) also dormammu stated that he is equal to Odin and Zeus, Phoenix and Dark Phoenix (the oldest Cosmic Entities, embodying the unborn life.Time Machine - A version of this armor possessed time-travelling technology based on Doctor Doom's Time Platform.Although similar in color with most armors, this armor is drastically different from its predecessors as it features an advanced design and a smoother surface plate than the regular Iron Man Armors. The Extremis Armor has a red and gold plating, which is the common color design for most of Tony's Iron Man Armors.

Iron man extremis 1