Raidmax Cobra ATX 3.1 Non-Modular Retail (RX-AED)
650/750/850W
Why this rating
Every criterion, its status, and the evidence behind it.
Evidence
- PASS
- 11
- WARN
- 0
- FAIL
- 0
- N/D
- 11
Ratings disagree by 4 steps
The engine rates this unit higher than the imported list, usually because the list de-tiers units that lack independent testing while the engine records that as low confidence instead.
Architecture
- PASS
Resonant primary stage (LLC)weight 3
- PASS
Synchronous 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
- PASS
Declares ATX 3.x complianceweight 2
- PASS
Full-range input (~100-240 VAC)weight 2
Efficiency
- PASS
Gold class efficiencyweight 2
Components
- PASS
105 degC electrolytic capacitors (Claims to be LLC resonant with an FDB fan and 105C caps, internal shots show otherwise.)weight 2
Claims to be LLC resonant with an FDB fan and 105C caps, internal shots show otherwise.(editorial note)
- PASS
FDB bearing fanweight 1.5
Claims to be LLC resonant with an FDB fan and 105C caps, internal shots show otherwise.(editorial note)
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
- N/D
Protection trip points have not been measuredweight 2
Electrical performance
- N/D
No qualitative electrical assessment on recordweight 3
- 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 Andysonweight 1.5
- PASS
Platform Costdown P37weight 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
- MET
Tier A - reference classspec 12.9
- Weighted pass ratio 100% with no warnings
- Capped at B+: confidence 74% does not support a higher rating
Missing evidence
These criteria could not be resolved. They lower the confidence index rather than count against the unit.
- Active power factor correction
- Protection coverage
- Over-current protection declared
- Over-temperature protection declared
- Protection trip points
- Measured electrical behaviour
- +12V ripple
- Voltage regulation
- +12V transient response
- Independent laboratory evidence
- Manufacturer warranty
Specification
Values carry the source they came from; unknowns stay unknown.
- Capacities
- 650 W750 W850 W
- Form factor
- ATX
- ATX generation
- ATX 3.x
- Efficiency class
- Gold
- AC input
- Full range (~100–240 V)
- Cable modularity
- No
- Introduced
- 2024
Electrical architecture
What is actually inside, when it is known.
- Primary stage
- LLC
- Secondary rectification
- SR
- Minor rail regulation
- DC-DC
- Built by
- Andyson
- Platform
- Costdown P37
Reviewer notes
Free text from the source, used by the engine as signals.
Some degree of false advertising going on. Claims to be LLC resonant with an FDB fan and 105C caps, internal shots show otherwise. Use caution.
- Fluid dynamic bearing fan reportedFDBconfidence 60%
- 105 degC capacitors reportedyesconfidence 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 808). 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.
Built on the same platform
Different badge, same electrical design.
Raidmax
Cobra ATX 3.1 Non-Modular
850W
no price yet
- Built by
- Andyson
- Platform
- Costdown P37
- Introduced
- 2026
- Engine rating
- B+(74%)
650W
no price yet
- Built by
- Andyson
- Platform
- Costdown P37
- Introduced
- 2026
- Engine rating
- B+(74%)