Quick Answer: Dismantle S-Rank Partition 5 discs with wrong main stats for your roster, fewer than 2 relevant sub-stats, or failed 3-roll tests (2+ dead rolls). Keep ATK%, Attribute DMG%, and PEN Ratio% for DPS; DEF%/HP% only for tanks. Dismantle at Bardic Needle (Inter-Knot 26+) for Master Copies and Plating Agents.
Understanding Partition 5 Mechanics
Partition 5 offers five main stats: HP% (7.5-30%), ATK% (7.5-30%), DEF% (12-48%), PEN Ratio% (6-24%), Attribute DMG% (7.5-30%). Unlike Partitions 1-3 (flat stats only), Partition 5 provides percentage scaling critical for endgame builds.
S-Rank discs spawn with 3-4 sub-stats, max at level 15, requiring 48,000 EXP and 72,000 Dennies. Sub-stat ranges: CRIT Rate 2.4-14.4%, CRIT DMG 4.8-28.8%, flat PEN 9-54.
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Why Partition 5 Matters
Partition 5 exclusively provides Attribute DMG and PEN Ratio main stats—unavailable elsewhere. This makes it the primary damage amplification slot for DPS builds.
Set bonuses require strategic Partition 5 choices:
Swing Jazz: 2-Pc Energy Regen +20%; 4-Pc Chain/Ult +15% squad DMG (12s)
Woodpecker Electro: 2-Pc CRIT Rate +8%; 4-Pc Crit attacks +9% ATK (6s)
Puffer Electro: 2-Pc PEN Ratio +8%; 4-Pc Ult DMG +20%, +15% ATK (12s)
Main Stat vs Sub-stat Impact
Main stats contribute 60-70% of disc value. Wrong main stats rarely salvage through good sub-stats alone.
2-Good-Substats Rule: Keep discs with 2+ relevant sub-stats matching character role. Fewer = instant dismantle.
Universal Dismantle Rule: Main Stat Priority
Core principle: If main stat doesn't match character's top 3 role priorities AND sub-stats don't compensate, dismantle immediately. This eliminates 60-70% of drops.
Top-Tier Partition 5 Main Stats
ATK%: Universal keeper for all DPS. 7.5-30% scaling benefits all damage sources. Even mediocre sub-stats justify temporary use.
Attribute DMG%: Highest damage ceiling for element-focused builds (Physical/Fire/Ice/Electric/Ether). 30% with 2 CRIT sub-stats = build-defining.
PEN Ratio%: 6-24% penetration serves DPS and Anomaly builds. Scales with enemy toughness—increasingly valuable in endgame.
Situational Stats
HP%/DEF%: Instant dismantle for DPS. Keep for:
Proto Punk tanks (2-Pc Shield +15%; 4-Pc Defensive Assist +15% squad DMG)
Yunkui Tales (2-Pc HP +10%; 4-Pc EX/Chain/Ult +4% CRIT Rate, +10% Sheer DMG)
Role-Lock Test: Keep one copy per set if building tank/support within next patch. Otherwise dismantle.
Character Role Priorities
DPS: CRIT Rate (60-70%) > CRIT DMG (140-160%) > ATK%/Attribute DMG% > PEN Ratio
Anomaly: Anomaly Proficiency > PEN Ratio > ATK% > CRIT stats
Tank: DEF%/HP% > Energy Regen% > Impact% > Flat DEF/HP
Support: Energy Regen% > Impact% > ATK% (Swing Jazz) > HP%/DEF%
The 3-Roll Test Method
Level disc to +3, +6, +9 (costs 8,000 EXP, 12,000 Dennies). If 2+ upgrades hit relevant stats, continue. If 2+ hit irrelevant stats, dismantle.
This identifies hidden gems and exposes poor upgrade trajectories before major investment.
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Minimum Sub-stat Thresholds
CRIT Rate: 7.2% minimum (50% of max 14.4%)
CRIT DMG: 12% minimum (42% of max 28.8%)
Flat PEN: 27 minimum (50% of max 54)
Below these after 3-roll test = dismantle candidate.
Dead Rolls
Dead roll = upgrade landing on zero-value stat for character role (e.g., flat HP on DPS disc).
Two-Strike Rule: One dead roll = variance. Two consecutive = dismantle immediately.
Perfect Sub-stat Exception
Maximum rolls (CRIT DMG 28.8%, CRIT Rate 14.4%) can salvage otherwise mediocre discs. Single perfect multiplicative stat compensates for weak secondaries in resource-constrained scenarios.
Safe-to-Scrap Criteria
5 Instant Dismantle Red Flags
Wrong main stat for entire roster: DEF% with no tanks = worthless
Four irrelevant sub-stats: Defensive subs on offensive main (or reverse)
Failed 3-roll test: Two dead rolls during +3/+6/+9 testing
Duplicate inferior versions: Keep best, scrap duplicates
Off-set pieces with poor stats: No set bonus + mediocre stats = trash
Yellow Flags (Secondary Evaluation)
Correct main stat, only 1 good sub-stat (temporary placeholder)
Set completion pieces with suboptimal stats (set bonus may justify)
Contradictory stats for future character releases (limited retention)
Green Flags (Always Keep)
Correct main stat + 3+ relevant sub-stats
Double CRIT sub-stats on offensive main stats
Set completion for Swing Jazz/Woodpecker/Puffer builds
Role-matched defensive stats (Proto Punk tanks, Yunkui Tales)
12 Real Evaluation Scenarios
Scenario 1: ATK% 30%, CRIT Rate 9.6%, CRIT DMG 19.2%, flat HP 880, flat DEF 92 → Keep. Two strong CRIT subs override two dead stats.
Scenario 2: DEF% 48%, ATK% 12%, CRIT Rate 7.2%, Energy Regen 24%, Impact 9% → Keep for tanks only. Mixed stats suit hybrid builds.
Scenario 3: Fire DMG 30%, flat HP 1320, flat DEF 138, HP% 15%, DEF% 24% → Dismantle. Perfect main can't save four defensive subs.
Scenario 4: PEN Ratio 24%, CRIT DMG 14.4%, ATK% 15%, flat PEN 36, Anomaly Prof 46 → Keep. Rare PEN main + multiple offensive subs.
Scenario 5: HP% 22.5%, CRIT Rate 12%, CRIT DMG 21.6%, ATK% 18%, Impact 13.5% → Dismantle for DPS, keep for Proto Punk.
Scenario 6: ATK% 15%, CRIT Rate 2.4%, flat HP 550, flat DEF 46, HP% 7.5% → Dismantle. Low main + minimum subs + three irrelevant stats.
Scenario 7: Electric DMG 27%, CRIT Rate 14.4% (max), CRIT DMG 4.8%, ATK% 7.5%, flat PEN 9 → Keep. Max CRIT Rate sub justifies retention.
Scenario 8: PEN Ratio 18%, Anomaly Prof 69, flat PEN 45, ATK% 12%, DEF% 18% → Keep for Anomaly. PEN + Anomaly Prof = ideal combo.
Scenario 9: DEF% 36%, Energy Regen 36%, Impact 13.5%, HP% 18%, ATK% 9% → Keep for support tanks. Perfect Proto Punk stats.
Scenario 10: ATK% 30%, flat HP 1760, flat DEF 138, HP% 22.5%, DEF% 36% → 3-roll test required. Perfect main, four defensive subs needs testing.
Scenario 11: Ice DMG 24%, CRIT Rate 9.6%, CRIT DMG 9.6%, Anomaly Prof 23, flat HP 1100 → Keep. Double CRIT on Attribute DMG overrides one dead stat.
Scenario 12: HP% 30%, CRIT Rate 7.2%, CRIT DMG 14.4%, ATK% 15%, PEN 27 → Dismantle unless Yunkui Tales build. Contradictory stats.
Advanced Dismantle Strategy
Material Yields
Dismantling at Bardic Needle (unlocked Inter-Knot 26) generates:
Molded Plating Agent: 100 EXP (efficiency 480)
Crystallized Plating Agent: 500 EXP (efficiency 96)
Ether Plating Agent: 2000 EXP (efficiency 24)
Master Copies: Noise Reduction (5 for Intermediate Tuning), Hi-Fi (3 for Advanced Tuning)
Leveled discs refund invested Dennies proportionally.
Dismantle vs Fodder
Dismantling provides ~2400 EXP equivalent + Master Copies. Direct fodder = 480-2000 EXP only.
Verdict: Dismantle for long-term value (Master Copies enable targeted tuning). Use as fodder only with excess Master Copies and urgent upgrade needs.
Inventory Management
One-Per-Combination Rule: Keep one copy of each main stat + set combo serving current/planned builds. Dismantle duplicates and irrelevant combinations.
50% Dismantle Rate: Scrap ~half of acquired S-Ranks within 24 hours. Aggressive culling maintains space while retaining test candidates.
Monthly Audit:
Week 1: Dismantle unlocked discs unused for 14+ days
Week 2: Scrap discs below level 9 after 14+ days
Week 3: Evaluate incomplete sets, dismantle excess pieces
Week 4: Compare duplicates, keep best versions only
Common Mistakes
Myth: Never Dismantle S-Ranks
Weekly farming yields 10-15 S-Ranks for dedicated players. Supply isn't scarce—inventory space and upgrade resources are. Aggressive dismantling concentrates resources on competitive equipment.
Just in Case Hoarding
Keeping bad discs for hypothetical futures wastes guaranteed inventory space for unlikely scenarios. Keep one copy of unusual combos max—duplicates offer zero additional insurance.
Ignoring Set Bonuses
Mediocre disc completing 4-piece Swing Jazz often outperforms superior off-set piece. Evaluate complete build output, not individual disc stats in isolation.
Sunk Cost Fallacy
Don't continue upgrading discs that failed 3-roll test because you already invested. Evaluate only future costs/benefits. Already-spent resources stay lost regardless.
Quick Reference
30-Second Evaluation Flowchart
Check partition + main stat (5s): Wrong for all characters? → Dismantle
Count relevant sub-stats (10s): <2 relevant? → Dismantle
Set bonus check (10s): Completes 4-piece? → Keep for testing
Exceptional stats (5s): Any sub-stat 80%+ max? → Keep for testing. Otherwise → Dismantle
Stat Ranges Reference
Partition 5 Main (Level 15):
HP%/ATK%/Attribute DMG%: 7.5-30%
DEF%: 12-48%
PEN Ratio%: 6-24%
Critical Subs:
CRIT Rate: 2.4-14.4% (keep 7.2%+)
CRIT DMG: 4.8-28.8% (keep 12%+)
Flat PEN: 9-54 (keep 27+)
Future-Proofing
Flexible Core Collection
Maintain one copy of each Partition 5 main stat per valuable set (Swing Jazz, Woodpecker, Puffer, Proto Punk, Yunkui Tales) with 2+ relevant sub-stats. Requires 15-25 slots, provides comprehensive build flexibility.
When to Hoard vs Dismantle
Hoard: Before major patches, during announced balance changes, approaching inventory cap with no farming plans.
Aggressive dismantle: Stable meta periods, no announced changes, static character roster. Maximize Master Copy income for tuning projects.
FAQ
What makes S-rank discs worth keeping? Main stats matching role priorities (ATK%/Attribute DMG%/PEN Ratio% for DPS; Energy Regen% for supports; DEF%/HP% for tanks) + 2+ relevant sub-stats. Must pass 3-roll test or have exceptional individual stats (max CRIT rolls). Set completion pieces justify slightly suboptimal stats.
Should I dismantle defensive Partition 5 main stats? Yes for DPS-only rosters. Keep one copy per set for Proto Punk/Yunkui Tales if you own/plan tanks/supports. Character-specific value makes blanket retention wasteful.
Minimum sub-stat rolls to keep? CRIT Rate 7.2%, CRIT DMG 12%, flat PEN 27 after 3-roll test. Below = negligible contribution. Exception: One low sub acceptable if others significantly exceed minimums.
How to identify trash Partition 5 discs? Wrong main stat for roster + four irrelevant sub-stats + two dead rolls in 3-roll test + duplicate inferior versions + off-set with <3 relevant stats.
Dismantling materials from S-ranks? Plating Agents (100/500/2000 EXP), Master Copies (Noise Reduction/Hi-Fi for tuning), Dennies refund. Quality scales with disc level and sub-stat count.
Which Partition 5 main stats are universally bad? None universally—all five serve specific roles. HP%/DEF% worthless for DPS, offensive stats waste on tanks. Bad depends on roster composition, not inherent stat quality.
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