Learning goals
- Understand mod capacity.
- Understand what an Orokin Reactor does for Warframes.
- Understand why Reactors are valuable.
- Learn when to use a Reactor.
- Learn when to wait.
Explanation
Mod capacity controls how many and how expensive mods you can equip. Strong builds often require upgraded mods, and upgraded mods cost more capacity. An Orokin Reactor is an upgrade item used on Warframes, companions, and similar gear to increase mod capacity. A Reactor does not directly add damage or survivability by itself. It gives you the capacity to equip the mods that add damage, survivability, ability stats, utility, or quality of life.
Controls and smart use
Default controls and menu labels can differ by platform and custom settings. Verify menu actions in the Arsenal, Mod screen, or Options > Controls when needed.
- Use the Warframe Upgrade screen to compare current capacity against the cost of your planned mods.
- Check whether the frame already has a Reactor before planning Forma or Exilus upgrades.
- Smart use: a Reactor is strongest on frames you enjoy, use regularly, or need for an account role.
What should I do?
Consider a Reactor when you enjoy the frame, plan to use it regularly, need it for farming, quests, progression, or a favorite playstyle, and the build feels limited by capacity. Wait if the frame is Mastery-only, you dislike the playstyle, or a Prime replacement is close.
Common mistakes
Avoid these patterns before spending scarce progression resources.
- Using a Reactor on every new Warframe immediately.
- Assuming a Reactor fixes a build with no useful mods.
- Ignoring Prime replacement plans.
- Using scarce Reactors on frames you only played once.
Practical example
You craft a frame, level it to rank 30, and enjoy its abilities. You keep using it after it is mastered. That is a strong sign it may deserve a Reactor.
Key Takeaways
- A Reactor is usually the first serious sign that a Warframe is becoming a long-term build.
Practical task
Reactors should support your actual gameplay, not just curiosity.
- Choose one Warframe you enjoy.
- Ask whether you use it often, whether it is rank 30, whether capacity limits important mods, and whether a Prime version affects the decision.
- Decide: use Reactor now, wait, or do not invest.
You can explain your Reactor decision in one sentence.