Gamemax GP-400A rev.2 Power Supply Unit: Efficiency and Noise Level Certifications

DUT Information

Brand	Gamemax
Manufacturer (OEM)	Gamemax
Series	GP Series
Model Number	GP-400A
Serial Number	N/A
DUT Notes	N/A

DUT Specifications

Rated Voltage (Vrms)	100-240
Rated Current (Arms)	6-3
Rated Frequency (Hz)	50-60
Rated Power (W)	400
Type	ATX12V
Cooling	120mm Sleeve Bearing Fan (DF1202512SEL)
Semi-Passive Operation	X
Cable Design	Fixed cables

Power Specifications

Rail	3.3V	5V	12V	5VSB	-12V
Amps	15	15	24	2.5	0.5
Max. Power (Watts)	100	288	12.5	6
Total Max. Power (W)	400

Cables and Connectors

Captive Cables

Description	Cable Count	Connector Count (Total)	Gauge	In Cable Capacitors
ATX connector 20+4 pin (510mm)	1	1	18-22AWG	No
4+4 pin EPS12V (510mm)	1	1	18AWG	No
6+2 pin PCIe (430mm)	1	1	18AWG	No
SATA (430mm) / 4-pin Molex (+150mm)	1	1/1	18AWG	No
4-pin Molex (430mm) / SATA (+150mm+150mm)	1	1/2	18AWG	No

Internal Component Details

General Data

Manufacturer (OEM)	Gamemax
PCB Type	Single Layer

Primary Side

Transient Filter	4x Y caps, 2x X caps, 2x CM chokes, 1x MOV
Inrush Protection	NTC Thermistor
Bridge Rectifier(s)	1x GBU1506L (600V, 15A @ 100°C)
APFC MOSFETS	2x Champion GP18S50G (500V, 28A @ 150°C, 0.19Ω)
APFC Boost Diode	1x CREE C3D06060A (600V, 6A @ 154°C)
Hold-up Cap(s)	1x CapXon (400V, 270uF, 2000h @ 105°C, HP)
Main Switchers	2x Champion GP18S50G (500V, 28A @ 150°C, 0.19Ω)
Combo APFC/PWM Controller	Champion CM6805BSX
Topology	Primary side: Double Forward
Secondary Side Topology	Group Regulation & Passive Rectification

Secondary Side

+12V MOSFETS	2x MOSPEC S60M60C SBR (60V, 60A)
5V & 3.3V MOSFETS	2x MOSPEC S40M45C SBR (45V, 40A)
Filtering Capacitors	Electrolytics: CapXon (2-5,000µF @ 105°C, KF), ChengX (2-4,000h @ 105°C, GR)
Supervisor IC	Grenergy GR8313 (OVP, UVP, SCP, PG)
Fan Model	Xin Zheng Heng Electronic DF1202512SEL (120mm, 12V, 0.10A, 1.2W, Sleeve Bearing)

5VSB Circuit

Rectifier	1x MOSPEC S60M60C SBR (60V, 60A) & CEF04N7G (700V, 4A, 3.3Ω)
Standby PWM Controller	Excelliance EM8569A

Results

Temperature Range (°C/°F)	30-32 / 86-89.6
ErP Lot 3/6 Ready	✅
ErP Lot 6 2010	✅
ErP Lot 6 2013	Partially
ErP Lot 3 2014 & CEC	Partially
(EU) No 617/2013 Compliance	✅

115V Performance

Average Efficiency	83.819%
Efficiency With 10W (≤500W) or 2% (>500W)	57.752%
Average Efficiency 5VSB	74.659%
Standby Power Consumption (W)	0.1091800
Average PF	0.992
Avg Noise Output	29.41 dB(A)
Efficiency Rating (ETA)	BRONZE
Noise Rating (LAMBDA)	A-

Test Equipment

Category	Equipment
Electronic Loads	Chroma 6314A x2, Chroma 63123A x6, Chroma 63102A, Chroma 63101A, Chroma 63601-5 x4, Chroma 63600-2 x2, Chroma 63640-80-80 x20, Chroma 63610-80-20 x2
AC Sources	Chroma 6530, Chroma 61604, Keysight AC6804B
Power Analyzers	N4L PPA1530x2, N4L PPA5530
Oscilloscopes	Picoscope 4444 & 3424, Keysight DSOX3024A, Rigol DS2072A
Voltmeter	Keithley 2015 THD 6.5 Digit
Sound Analyzer	Bruel & Kjaer 2250-L G4
Microphone	Bruel & Kjaer Type 4955-A, Bruel & Kjaer Type 4189
Data Loggers	Picoscope TC-08 x2, Labjack U3-HV x2

Hold-Up Time & Power OK Signal (230V)

Hold-Up Time (ms)	16.2
AC Loss to PWR_OK Hold Up Time (ms)	11.2
PWR_OK Inactive to DC Loss Delay (ms)	5.0

Efficiency Under High Ambient Temperature (115V/230V)

This graph depicts the PSU's efficiency across its operational range under high ambient temperatures (28°C - 36°C). It shows how efficiency varies with load for both 115V and 230V input, illustrating performance in warmer conditions.

5VSB Efficiency (115V/230V)

This graph illustrates the efficiency levels of the 5VSB (standby voltage) rail at low loads (0W to 13W) for both 115V and 230V input, indicating performance during standby operation.

5VSB Efficiency - 115V (ERP LOT 3/6 & CEC)

Test #	5VSB	DC/AC (Watts)	Efficiency	PF/AC Volts
1	0.045A	0.230	54.245%	0.058 (115.09V)
2	0.090A	0.460	61.089%	0.100 (115.09V)
3	0.550A	2.803	74.727%	0.281 (115.09V)
4	1.000A	5.084	76.176%	0.330 (115.09V)
5	1.500A	7.608	76.194%	0.356 (115.09V)
6	2.500A	12.614	74.635%	0.387 (115.09V)

5VSB Efficiency - 230V (ERP LOT 3/6 & CEC)

Test #	5VSB	DC/AC (Watts)	Efficiency	PF/AC Volts
1	0.045A	0.230	44.834%	0.022 (230.23V)
2	0.090A	0.460	55.355%	0.035 (230.23V)
3	0.550A	2.802	71.135%	0.144 (230.25V)
4	1.000A	5.084	72.952%	0.212 (230.25V)
5	1.500A	7.607	74.652%	0.258 (230.25V)
6	2.500A	12.614	75.119%	0.309 (230.24V)

Efficiency Graph 115V

This heatmap displays the PSU's efficiency across its entire operational range at 115V input. The X-axis represents the load on the +12V combined watts, and the Y-axis represents the load on the 5V & 3.3V combined watts. Color bands indicate efficiency percentages: >94% (dark orange), 92-94% (orange), 90-92% (yellow), 85-90% (light green), 80-85% (green), 75-80% (light blue), <70% (purple).

Noise Graph 115V

This heatmap illustrates the PSU's noise levels (in dBA) across its entire operational range at 115V input and 30-32°C ambient temperature. The X-axis represents the load on the +12V rail(s), and the Y-axis represents the load on the minor rails. Color bands indicate noise ranges: <6 (purple), 6-10 (blue), 10-15 (light blue), 15-20 (green), 20-25 (yellow), 25-30 (orange), 30-35 (red), 35-40 (dark red), 40-45 (brown), 45-50 (grey), >50 (dark grey).

Vampire Power -115V

This graph, generated by PPA Standby Power Analysis software, plots the power consumption in Watts over time (seconds) during standby mode at 115V input. It measures standby power consumption according to EN50564 & IEC62301 test limits.

10-110% Load Tests 115V

Test #	12V	5V	3.3V	5VSB	DC/AC (Watts)	Efficiency	Fan Speed (RPM)	PSU Noise (dB[A])	Temps (In/Out)	PF/AC Volts
1	1.488A	1.972A	1.957A	0.986A	39.991	76.738%	815	14.4	30.05°C	0.947 (115.11V)
2	3.944A	2.972A	2.944A	1.187A	79.687	82.629%	819	14.5	30.79°C	0.990 (115.10V)
3	6.735A	3.475A	3.430A	1.389A	119.208	84.858%	827	14.8	31.18°C	0.993 (115.10V)
4	9.597A	3.978A	3.944A	1.591A	159.577	85.768%	1063	20.9	31.67°C	0.996 (115.10V)
5	12.091A	4.994A	4.942A	1.796A	199.708	85.898%	1293	26.3	32.30°C	0.997 (115.10V)
6	14.585A	6.016A	5.945A	2.001A	239.808	85.589%	1511	31.1	32.55°C	0.998 (115.10V)
7	17.048A	7.046A	6.952A	2.208A	279.523	85.032%	1604	33.4	32.90°C	0.998 (115.11V)
8	19.585A	8.088A	7.964A	2.417A	320.057	84.364%	1611	33.6	33.45°C	0.998 (115.12V)
9	22.463A	8.612A	8.459A	2.421A	359.323	83.854%	1613	33.6	34.52°C	0.998 (115.11V)
10	25.425A	9.138A	8.990A	2.529A	400.021	83.135%	1615	33.7	35.46°C	0.998 (115.11V)
11	28.779A	9.139A	9.000A	2.532A	440.052	82.426%	1617	33.7	36.03°C	0.998 (115.10V)
CL1	0.134A	12.000A	11.999A	0.000A	99.145	76.151%	1518	31.2	32.52°C	0.993 (115.11V)
CL2	24.002A	1.001A	0.996A	1.000A	301.167	86.021%	1571	32.6	35.78°C	0.998 (115.10V)

20-80W Load Tests 115V

Test #	12V	5V	3.3V	5VSB	DC/AC (Watts)	Efficiency	Fan Speed (RPM)	PSU Noise (dB[A])	PF/AC Volts
1	1.168A	0.489A	0.471A	0.196A	19.419	68.886%	810	14.2	0.828 (115.10V)
2	2.406A	0.981A	0.977A	0.393A	39.898	78.890%	809	14.2	0.947 (115.10V)
3	3.568A	1.475A	1.453A	0.591A	59.334	82.405%	810	14.2	0.986 (115.10V)
4	4.805A	1.971A	1.959A	0.789A	79.794	83.613%	814	14.3	0.990 (115.10V)

Ripple Measurements 115V

Test	12V	5V	3.3V	5VSB	Pass/Fail
10% Load	18.3 mV	12.6 mV	15.9 mV	16.4 mV	Pass
20% Load	22.7 mV	13.2 mV	17.0 mV	49.2 mV	Pass
30% Load	27.6 mV	15.4 mV	20.7 mV	53.2 mV	Fail
40% Load	31.1 mV	15.8 mV	23.7 mV	54.4 mV	Fail
50% Load	33.8 mV	16.0 mV	23.2 mV	52.3 mV	Fail
60% Load	30.1 mV	15.8 mV	18.6 mV	46.8 mV	Pass
70% Load	41.9 mV	20.0 mV	22.3 mV	70.0 mV	Fail
80% Load	44.1 mV	22.3 mV	24.5 mV	80.2 mV	Fail
90% Load	48.3 mV	25.0 mV	25.3 mV	84.0 mV	Fail
100% Load	52.5 mV	29.7 mV	26.5 mV	90.7 mV	Fail
110% Load	59.3 mV	32.9 mV	25.5 mV	97.2 mV	Fail
Crossload 1	36.4 mV	66.1 mV	27.7 mV	23.2 mV	Fail
Crossload 2	35.2 mV	19.5 mV	18.5 mV	48.9 mV	Pass

Product Images and Certifications

Product Images

Top side: An image showing the top view of the Gamemax GP-400A power supply unit, featuring its fan and casing.

Power specifications label: An image of the label on the power supply unit, detailing its model name (GP400A), ATX 12V Active PFC, input voltage range (100-240V), current and frequency ratings, DC output specifications (+3.3V, +5V, +12V, -12V, +5VSB) with maximum current and power ratings, efficiency ratings (Bronze at 20%, 50%, 100%), and certifications (CE, FC, E, APFC, CB). It also includes warnings and manufacturing information.

Certifications (115V)

Cybenetics Bronze: Indicates the power supply meets specific efficiency standards.

Cybenetics A-: Indicates the noise level rating.

All data and graphs included in this test report can be used by any individual under the following conditions:

It should be mentioned that the test results are provided by Cybenetics.
The link to the original test results document should be provided in any case.

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Gamemax GP-400A rev.2 (Sample #2)