1st Player ACK Standard

550/650/750W

80 PLUSATXATX 2.xnon-modular230V only2025

C-Published tier

Why this rating

Every criterion, its status, and the evidence behind it.

C-Published rating

EEngine rating

Evidence

74%Limited lab data

PASS: 3
WARN: 1
FAIL: 7
N/D: 11

Ratings disagree by 4 steps

The engine rates this unit lower than the imported list, driven by the criteria listed below.

Architecture

FAIL
Legacy primary topology (DF)weight 3
FAIL
Passive (Schottky) rectificationweight 2
FAIL
Group-regulated minor railsweight 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

FAIL
No efficiency certification claimedweight 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
FAIL
OCP is not claimed on any rail (OCP is not claimed on any rail (although it most likely exists for the minor rails only), very low +12V line output relative to total capacity.)weight 2
OCP is not claimed on any rail (although it most likely exists for the minor rails only), very low +12V line output relative to total capacity.(editorial note)
N/D
OTP declaration has not been verifiedweight 1.5
FAIL
Protection trip points are set poorly (OCP is not claimed on any rail (although it most likely exists for the minor rails only), very low +12V line output relative to total capacity.)weight 2
OCP is not claimed on any rail (although it most likely exists for the minor rails only), very low +12V line output relative to total capacity.(editorial note)

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 Hellyweight 1.5
PASS
Platform ATX-0200weight 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
- — Minor rail regulation: Group-regulated minor rails
- — Efficiency certification: No efficiency certification claimed
- — AC input range: Restricted 230V-only input
- — Over-current protection declared: OCP is not claimed on any rail (OCP is not claimed on any rail (although it most likely exists for the minor rails only), very low +12V line output relative to total capacity.)
- — Protection trip points: Protection trip points are set poorly (OCP is not claimed on any rail (although it most likely exists for the minor rails only), very low +12V line output relative to total capacity.)
- — Too many failed criteria for this tier (7)
MISSED
Tier B - strong mainstreamspec 12.10
- — Primary conversion stage: Legacy primary topology (DF)
- — Secondary rectification: Passive (Schottky) rectification
- — Minor rail regulation: Group-regulated minor rails
- — Efficiency certification: No efficiency certification claimed
- — Over-current protection declared: OCP is not claimed on any rail (OCP is not claimed on any rail (although it most likely exists for the minor rails only), very low +12V line output relative to total capacity.)
- — Protection trip points: Protection trip points are set poorly (OCP is not claimed on any rail (although it most likely exists for the minor rails only), very low +12V line output relative to total capacity.)
- — Too many failed criteria for this tier (6)
MISSED
Tier C - adequatespec 12.11
- — Minor rail regulation: Group-regulated minor rails
- — Protection trip points: Protection trip points are set poorly (OCP is not claimed on any rail (although it most likely exists for the minor rails only), very low +12V line output relative to total capacity.)
- — Too many failed criteria for this tier (2)
MISSED
Tier D - basicspec 12.12
- — Minor rail regulation: Group-regulated minor rails
- — Secondary rectification: Passive (Schottky) rectification
- — Efficiency certification: No efficiency certification claimed
- — Too many failed criteria for this tier (3)

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-temperature protection declared
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: 550 W650 W750 W
Form factor: ATX
ATX generation: ATX 2.x
Efficiency class: White
AC input: 230V
Cable modularity: No
Introduced: 2025

Electrical architecture

What is actually inside, when it is known.

Primary stage: DF
Secondary rectification: PR
Minor rail regulation: GR
Built by: Helly
Platform: ATX-0200

Reviewer notes

Free text from the source, used by the engine as signals.

OCP is not claimed on any rail (although it most likely exists for the minor rails only), very low +12V line output relative to total capacity.

OCP not claimed on any railnoconfidence 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 6). 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.