ZZZ Drive Disc Calculator: Zenless Zone Zero Relic Rater & CV Guide

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Farming S-Rank Drive Discs at the Bardic Needle Music Store is the core endgame grind in Zenless Zone Zero. Every S-Rank disc comes with four substats, receiving random upgrade rolls at levels +3, +6, +9, +12, and +15. Because Plating Agents and Dennies are scarce, investing materials into low-efficiency discs can severely slow down your team’s Shiyu Defense progression.

This ZZZ Drive Disc Calculator and Zenless Zone Zero Relic Rater analyzes your disc’s partition slot, Crit Value (CV), and weighted roll efficiency to give you an instant quality grade and dismantle recommendation.

How to Calculate Crit Value (CV) & Roll Efficiency in ZZZ

In Zenless Zone Zero, evaluating whether an offensive Drive Disc is worth keeping relies on measuring both raw Crit Value (CV) and total weighted substat distribution.

1. Crit Value (CV) Formula

$$\text{CV} = (\text{Crit Rate\%} \times 2) + \text{Crit DMG\%}$$

Crit Rate is weighted double because standard base rolls grant $+2.4\%$ Crit Rate compared to $+4.8\%$ Crit DMG (a direct 1:2 ratio).

2. Weighted Roll Efficiency Formula

$$\text{Roll Efficiency \%} = \left( \frac{\sum (\text{Actual Substat Values} \times \text{Stat Weights})}{\text{Max Theoretical Roll Ceiling for Level}} \right) \times 100$$

• Tier 1 Offensive (Weight 1.0): Crit Rate %, Crit DMG %
• Tier 2 High Impact (Weight 0.75): ATK %, Anomaly Proficiency, Flat PEN
• Tier 3 Flat Stats (Weight 0.25): Flat ATK
• Tier 4 Defensive (Weight 0.05 – 0.10): HP %, DEF %, Flat HP, Flat DEF

Substat Base Values & Disc Grading Scale

When an S-Rank Drive Disc rolls a substat, it draws from fixed baseline increments:

Substat Attribute	Base Roll Increment	Maximum 5-Roll Value (+15)	Weight Multiplier
Crit Rate %	+2.4%	Up to +14.4%	1.00x
Crit DMG %	+4.8%	Up to +28.8%	1.00x
ATK %	+3.0%	Up to +18.0%	0.75x
Anomaly Proficiency	+9.0	Up to +54.0	0.75x
Flat PEN	+9.0	Up to +54.0	0.75x
Flat ATK	+19.0	Up to +114.0	0.25x

Quality Rating Tiers

• SSS Tier (God Roll / $35+\text{ CV}$ or $85\%+\text{ Efficiency}$): Pinnacle end-game piece. Lock and equip on your primary hypercarry DPS agent.
• SS Tier (Endgame Viable / $28\text{–}34\text{ CV}$): Excellent roll distribution with zero wasted upgrades. Ready for high-floor Shiyu Defense clears.
• S Tier (Solid Keeper / $20\text{–}27\text{ CV}$): Strong baseline stats. Great placeholder while farming specialized sets.
• A Tier (Usable / $12\text{–}19\text{ CV}$): Early-game bridge piece. Roll to $+6$ or $+9$; if rolls miss Crit/ATK%, pause investment.
• Dismantle Tier ($<12\text{ CV}$ & Low Efficiency): Recycle at the Music Store into Master Copies and Tuning Calibrators.

Zenless Zone Zero Drive Disc Upgrade Priority & Partition Slots

Partition slots determine whether a disc has fixed or flexible main stats:

• Partitions [I], [II], [III] (Fixed Main Stats): Slot 1 is always Flat HP, Slot 2 is Flat ATK, and Slot 3 is Flat DEF. Because main stats cannot brick, demand strict $25+\text{ CV}$ or high roll efficiency before taking these to $+15$.
• Partitions [IV], [V], [VI] (Variable Main Stats): Slot 4 (Crit Rate / Crit DMG / AP), Slot 5 (Elemental DMG% / PEN Ratio / ATK%), and Slot 6 (Energy Regen / Impact / ATK%) have huge main stat variance. Accept lower CV thresholds ($15\text{–}20\text{ CV}$) if the main stat matches your agent’s core scaling.

Frequently Asked Questions

How do you calculate Crit Value on a ZZZ Drive Disc?

To learn how to calculate Crit Value ZZZ Drive Disc, multiply the total Crit Rate percentage by 2 and add the Crit DMG percentage. For instance, a disc with $7.2\%$ Crit Rate and $14.4\%$ Crit DMG has a CV score of $(7.2 \times 2) + 14.4 = \mathbf{28.8\text{ CV}}$.

What is the Zenless Zone Zero Drive Disc upgrade priority?

Prioritize upgrading Partition IV (Crit/AP) and Partition V (Elemental DMG/PEN) first, as their percentage-based main stats provide massive DPS multipliers. Upgrade Partitions I through III only when their substats carry at least 2 to 3 desirable offensive rolls.

When is a Drive Disc safe to dismantle?

Any disc that rolls three defensive substats (Flat DEF, DEF%, Flat HP) or reaches $+9$ without upgrading Crit, ATK%, or Anomaly Proficiency should be dismantled at the Bardic Needle to recover tuning materials.

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