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Primed Fever Strike
Warframe · Mod

Primed Fever Strike

Melee elemental damage mod

Released Oct 12, 2017

Primed Fever Strike adds Toxin damage to a compatible melee weapon. Consider it when you want to add or increase Toxin on a melee build and can spare a standard mod slot.

TypeMeleePolaritynaramonMax rank10Base drain6VariantStandardRarityLegendary
Primed Fever Strike GUIDE

Understand Primed Fever Strike

Useful when…

  • Adding Toxin to a melee weapon’s damage setup.
  • Using a higher-capacity Toxin mod than Fever Strike when its rank and slot cost fit.

What it does

At rank 0 it grants +15% Toxin; at rank 5, +90%; and at rank 10, +165%. It is a standard melee mod with Naramon polarity, a base drain of 6, and a maximum rank of 10. The bonus is a listed mod effect, not a statement of the weapon’s final damage.

Rank and slot tradeoffs

Higher ranks raise the Toxin bonus but also require more investment and mod capacity. The listed fusion examples rise from 40 Endo and 1,932 Credits for rank 0 to 1, to 1,280 Endo and 61,824 Credits for rank 5 to 6, and 20,480 Endo and 989,184 Credits for rank 9 to 10. Rank it as far as the added bonus justifies those costs and the available capacity. As a standard-slot mod, it does not use an Exilus slot.

wiki.warframe.com ↗

Alternatives and exclusions

Fever Strike is the standard, lower-rank counterpart, with +90% Toxin at its listed maximum rank of 5; Flawed Fever Strike reaches +60% at rank 3. These are alternatives for different investment or capacity needs, not extra copies to stack: Primed Fever Strike explicitly excludes both. Amalgam Organ Shatter instead grants critical damage and heavy-attack wind-up speed, so it serves a different purpose.

Limitations and tradeoffs

  • High ranks provide more Toxin but have steep later fusion costs and use more mod capacity.
  • Its standard slot competes with other melee mods; it cannot be equipped alongside Fever Strike or Flawed Fever Strike.

Common mistakes to avoid

  • Treating +165% Toxin as the weapon’s final damage rather than the mod’s bonus.
  • Equipping it with Fever Strike or Flawed Fever Strike despite the stated incompatibility.
  • Ignoring the sharp increase in fusion costs near the final ranks.

Effects and reference details

Rank effects and investment

RankListed effectsUnpolarized drainTotal Endo from rank 0Total Credits from rank 0
0+15% Toxin600
1+30% Toxin7401,932
2+45% Toxin81205,796
3+60% Toxin928013,524
4+75% Toxin1060028,980
5+90% Toxin111,24059,892
6+105% Toxin122,520121,716
7+120% Toxin135,080245,364
8+135% Toxin1410,200492,660
9+150% Toxin1520,440987,252
10+165% Toxin1640,9201,976,436

These are listed mod effects and fusion costs, not final build damage. Matching and mismatched polarities change capacity. Totals assume starting at rank 0.

References and version

Game data version: Pinned public export

Primed Fever Strike — WARFRAME Wiki ↗wiki.warframe.com ↗
Technical source data for verification

These machine-readable game records support the calculations and factual checks. The wiki references above are intended for reading.

Warframe Public Export ↗Raw game data (JSON) ↗wiki.warframe.com ↗

Original data record ↗

Optional: calculate an upgrade or configurationOpen the calculator when you want a cost estimate or a compatibility check.
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Fusion cost and capacity

0Endo
0Credits
6Target slot drain
RankObserved effectDrainEndo from 0Credits from 0
0+15% Toxin600
1+30% Toxin7401,932
2+45% Toxin81205,796
3+60% Toxin928013,524
4+75% Toxin1060028,980
5+90% Toxin111,24059,892
6+105% Toxin122,520121,716
7+120% Toxin135,080245,364
8+135% Toxin1410,200492,660
9+150% Toxin1520,440987,252
10+165% Toxin1640,9201,976,436

Slot polarity changes drain; fusion prices depend on mod rarity and family.

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