Abko (Abkoncore) Coremax (CM) B (Bronze)
500W
Why this rating
Every criterion, its status, and the evidence behind it.
Evidence
- PASS
- 3
- WARN
- 2
- FAIL
- 5
- N/D
- 12
Architecture
- FAIL
Legacy primary topology (DF)weight 3
- FAIL
Passive (Schottky) rectificationweight 2
- PASS
Independent DC-DC converters for +5V and +3.3Vweight 3
- N/D
PFC type is not documented; APFC assumed only when statedweight 2
Standards
- WARN
ATX 2.x generation platformweight 2
- FAIL
Restricted 230V-only inputweight 2
Efficiency
- WARN
Bronze class efficiencyweight 2
Components
- N/D
Capacitor temperature rating is not documentedweight 2
- N/D
Fan bearing type is not documentedweight 1.5
Protections
- N/D
Protection set has not been verified independentlyweight 3
- N/D
OCP declaration has not been verifiedweight 2
- N/D
OTP declaration has not been verifiedweight 1.5
- FAIL
Protection trip points are set poorly (5VSB has >60mV of ripple in crossloads and OCP is poorly tuned, with high ripple for all rails.)weight 2
5VSB has >60mV of ripple in crossloads and OCP is poorly tuned, with high ripple for all rails.(editorial note)
Electrical performance
- FAIL
Electrical performance criticised: 5VSB has >60mV of ripple in crossloads and OCP is poorly tuned, with high ripple for all rails.weight 3
5VSB has >60mV of ripple in crossloads and OCP is poorly tuned, with high ripple for all rails.(editorial note)
- N/D
No ripple measurement on recordweight 3
- N/D
No voltage regulation measurement on recordweight 2
- N/D
No transient response measurement on recordweight 2
Evidence
- PASS
Built by PREEweight 1.5
- N/D
Platform has not been identifiedweight 1.5
- N/D
No independent laboratory report linked yetweight 2
Warranty and support
- N/D
Warranty length is not documentedweight 1.5
Safety
- PASS
No safety incidents or false claims on recordweight 3
How the tier was reached
- MISSED
Tier A - reference classspec 12.9
- — Primary conversion stage: Legacy primary topology (DF)
- — Secondary rectification: Passive (Schottky) rectification
- — Efficiency certification: Bronze class efficiency
- — AC input range: Restricted 230V-only input
- — Protection trip points: Protection trip points are set poorly (5VSB has >60mV of ripple in crossloads and OCP is poorly tuned, with high ripple for all rails.)
- — Measured electrical behaviour: Electrical performance criticised: 5VSB has >60mV of ripple in crossloads and OCP is poorly tuned, with high ripple for all rails.
- — Too many failed criteria for this tier (5)
- MISSED
Tier B - strong mainstreamspec 12.10
- — Primary conversion stage: Legacy primary topology (DF)
- — Secondary rectification: Passive (Schottky) rectification
- — Protection trip points: Protection trip points are set poorly (5VSB has >60mV of ripple in crossloads and OCP is poorly tuned, with high ripple for all rails.)
- — Measured electrical behaviour: Electrical performance criticised: 5VSB has >60mV of ripple in crossloads and OCP is poorly tuned, with high ripple for all rails.
- — Too many failed criteria for this tier (4)
- MISSED
Tier C - adequatespec 12.11
- — Protection trip points: Protection trip points are set poorly (5VSB has >60mV of ripple in crossloads and OCP is poorly tuned, with high ripple for all rails.)
- — Measured electrical behaviour: Electrical performance criticised: 5VSB has >60mV of ripple in crossloads and OCP is poorly tuned, with high ripple for all rails.
- — Too many failed criteria for this tier (2)
- MISSED
Tier D - basicspec 12.12
- — Secondary rectification: Passive (Schottky) rectification
- — Measured electrical behaviour: Electrical performance criticised: 5VSB has >60mV of ripple in crossloads and OCP is poorly tuned, with high ripple for all rails.
- Insufficient evidence, unknown platform or unsatisfactory architecture (spec 12.13)
- Modifiers do not apply to E and F
Missing evidence
These criteria could not be resolved. They lower the confidence index rather than count against the unit.
- Active power factor correction
- Electrolytic capacitor temperature rating
- Fan bearing type
- Protection coverage
- Over-current protection declared
- Over-temperature protection declared
- +12V ripple
- Voltage regulation
- +12V transient response
- Platform attribution
- Independent laboratory evidence
- Manufacturer warranty
Specification
Values carry the source they came from; unknowns stay unknown.
- Capacities
- 500 W
- Form factor
- ATX
- ATX generation
- ATX 2.x
- Efficiency class
- Bronze
- AC input
- 230V
- Cable modularity
- No
- Introduced
- 2024
Electrical architecture
What is actually inside, when it is known.
- Primary stage
- DF
- Secondary rectification
- PR
- Minor rail regulation
- DC-DC
- Built by
- PREE
- Platform
- not documented
Reviewer notes
Free text from the source, used by the engine as signals.
5VSB has >60mV of ripple in crossloads and OCP is poorly tuned, with high ripple for all rails.
- Electrical performance criticised by the reviewernoconfidence 60%
- Protection trip points criticisednoconfidence 60%
Where this data comes from
Each field records which source supplied it and how sure we are.
| Field | Source | Confidence | Captured |
|---|---|---|---|
| oem | PSU Tier List (seed workbook)trust 70 | 70% | workbook import |
| intro_year | PSU Tier List (seed workbook)trust 70 | 70% | workbook import |
| modularity | PSU Tier List (seed workbook)trust 70 | 70% | workbook import |
| atx_version | PSU Tier List (seed workbook)trust 70 | 70% | workbook import |
| form_factor | PSU Tier List (seed workbook)trust 70 | 70% | workbook import |
| input_range | PSU Tier List (seed workbook)trust 70 | 70% | workbook import |
| platform | PSU Tier List (seed workbook)trust 70 | 70% | workbook import |
| editorial_tier | PSU Tier List (seed workbook)trust 70 | 70% | workbook import |
| efficiency_class | PSU Tier List (seed workbook)trust 70 | 70% | workbook import |
| primary_topology | PSU Tier List (seed workbook)trust 70 | 70% | workbook import |
| minor_rail_regulation | PSU Tier List (seed workbook)trust 70 | 70% | workbook import |
| secondary_rectification | PSU Tier List (seed workbook)trust 70 | 70% | workbook import |
Primary source: PSU Tier List (seed workbook) (row 27). Community-maintained tier list imported as the seed data set. Ratings from this source are shown as the published tier; the Tier Engine computes its own rating separately.