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Gram Prime
Warframe · Equipment

Gram Prime

High-critical heavy blade

Released Sep 25, 2018

Gram Prime is a mastery-rank-14 heavy blade with 300 listed normal-attack damage and 32% critical chance, paired with a slower 0.8 attack speed. Consider it when you want high listed critical potential and Slash-heavy hits in a deliberate two-handed weapon; its slam attacks have separate damage types and values.

TypeHeavy BladeMastery requirement14Critical chance32%Critical multiplier2.6
Gram Prime GUIDE

Understand Gram Prime

Useful when…

  • Critical-focused heavy-blade normal attacks.
  • Slash-heavy normal damage with a significant Impact component.
  • Regular and heavy area slams.

What does its normal attack offer?

Normal attacks deal 300 listed damage: 225 Slash, 60 Impact, and 15 Puncture. The attack lists 32% critical chance, a 2.6× critical multiplier, and 32% status chance. Its speed is 0.8 attacks per second, range is 2.9 units, and follow-through is 0.6. This is a slower heavy blade whose listed critical properties are a major part of its profile.

How do its slams differ from normal attacks?

A regular slam deals 600 Impact damage in an area with 50% falloff at 8 units. A heavy slam deals 900 Blast with 30% falloff at 9 units; both list 10% status chance. Heavy attack damage is 1,800 and the wind-up is 1.1 seconds. Do not confuse these slam values or chances with the normal attack's 32% status chance.

How should you evaluate its investment?

Gram Prime has two Madurai polarities and a five-second combo duration. Its 0.8 attack speed means the high listed critical values come with a slower normal cadence.

What other weapons serve different purposes?

Dual Keres Prime is a dual-sword option with 32% critical chance and a 2.6× multiplier, matching Gram Prime's listed critical values but using a different weapon type and attack cadence not detailed here. Corufell transforms into a Gunblade briefly on heavy attacks, making it a distinct mode-focused alternative. Dual Keres is a lower-mastery dual-sword alternative.

Limitations and tradeoffs

  • The listed normal attack speed is 0.8.
  • The heavy-attack wind-up is 1.1 seconds.
  • Slams have lower listed status chance than normal attacks.

Common mistakes to avoid

  • Treating the 32% normal status chance as the slam status chance.
  • Assuming its critical stats imply a fast swing cadence.
  • Expecting Corufell's heavy-attack transformation from Gram Prime.

Effects and reference details

Detailed properties

Critical chance32%
Critical multiplier2.6×
Status chance32%
Listed attack rate0.8
Blocking angle55
Combo duration5 seconds
Follow through0.6
Range2.9 m
Foundry Credits15,000
Foundry time12 hours

Attack modes

ModeCritical chanceCritical multiplierStatus chanceDamage types
Normal Attack32%2.6×32%impact: 60, slash: 225, puncture: 15
Slam Attack32%2.6×10%impact: 600
Heavy Slam Attack32%2.6×10%blast: 900

Each mode has its own properties. Alternate forms may require additional unlocks; these values are not combined build damage.

References and version

Game data version: Pinned public export

Gram Prime — WARFRAME Wiki ↗
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