1st Player SFX 750 W Platinum Review

Name: 1st Player SFX 750 W Platinum
Brand: 1STPLAYER

crmaris

on Jan 27th, 2022,

in Power Supplies.

Manufacturer: 1STPLAYER

Fan Noise »

Efficiency

Using the results we gathered so far, we plotted a chart showing the PSU's efficiency at low loads and loads ranging from 10 to 110 percent of the maximum-rated capacity.

Efficiency is high for all load ranges.

10%–100% Load Testing

These tests reveal the PSU's load regulation and efficiency levels under high ambient temperatures and show how the fan-speed profile behaves under harsh operating conditions.

Load Regulation & Efficiency Testing Data - 1st Player SFX 7.5 750W
Test	12V	5V	3.3V	5VSB	Power (DC/AC)	Efficiency	Fan Speed	PSU Noise	Temp (In/Out)	PF/AC Volts
10%	4.427A	1.975A	1.979A	0.988A	74.99W	87.387%	2131 RPM	30.8 dB(A)	40.67°C	0.844
10%	12.059V	5.064V	3.335V	5.061V	85.814W	87.387%	2131 RPM	30.8 dB(A)	44.94°C	230.28V
20%	9.870A	2.968A	2.978A	1.191A	149.921W	91.955%	2083 RPM	30.7 dB(A)	41.04°C	0.915
20%	12.059V	5.053V	3.324V	5.037V	163.038W	91.955%	2083 RPM	30.7 dB(A)	45.41°C	230.29V
30%	15.676A	3.47A	3.484A	1.396A	224.913W	92.884%	2159 RPM	31.2 dB(A)	41.81°C	0.944
30%	12.048V	5.044V	3.315V	5.015V	242.144W	92.884%	2159 RPM	31.2 dB(A)	46.67°C	230.3V
40%	21.497A	3.972A	3.993A	1.603A	299.994W	93.072%	2364 RPM	36.3 dB(A)	42.16°C	0.958
40%	12.039V	5.036V	3.306V	4.991V	322.324W	93.072%	2364 RPM	36.3 dB(A)	47.91°C	230.3V
50%	26.925A	4.975A	5.007A	1.812A	374.362W	92.873%	2529 RPM	36.9 dB(A)	42.37°C	0.967
50%	12.028V	5.026V	3.295V	4.967V	403.092W	92.873%	2529 RPM	36.9 dB(A)	48.3°C	230.31V
60%	32.410A	5.982A	6.029A	2A	449.194W	92.573%	2776 RPM	39.8 dB(A)	43.05°C	0.973
60%	12.018V	5.016V	3.285V	4.944V	485.232W	92.573%	2776 RPM	39.8 dB(A)	49.32°C	230.31V
70%	37.901A	6.992A	7.056A	2.237A	524.228W	92.203%	3012 RPM	41.0 dB(A)	43.93°C	0.977
70%	12.008V	5.007V	3.274V	4.917V	568.558W	92.203%	3012 RPM	41.0 dB(A)	50.25°C	230.31V
80%	43.467A	8.002A	8.086A	2.344A	599.314W	91.803%	3102 RPM	41.4 dB(A)	44.34°C	0.98
80%	11.996V	4.997V	3.263V	4.904V	652.827W	91.803%	3102 RPM	41.4 dB(A)	51.4°C	230.3V
90%	49.377A	8.517A	8.599A	2.454A	674.316W	91.388%	3237 RPM	42.5 dB(A)	44.85°C	0.982
90%	11.986V	4.988V	3.255V	4.888V	737.864W	91.388%	3237 RPM	42.5 dB(A)	53.18°C	230.3V
100%	55.291A	9.036A	9.149A	2.565A	749.454W	90.825%	3246 RPM	42.5 dB(A)	45.25°C	0.984
100%	11.978V	4.979V	3.245V	4.871V	825.161W	90.825%	3246 RPM	42.5 dB(A)	54.67°C	230.28V
CL1	0.114A	11.94A	12.014A	0A	101.257W	86.933%	2475 RPM	36.0 dB(A)	41.19°C	0.884
CL1	12.050V	5.041V	3.303V	5.125V	116.477W	86.933%	2475 RPM	36.0 dB(A)	46.72°C	230.28V
CL2	0.114A	19.788A	0A	0A	101.375W	86.174%	2251 RPM	33.0 dB(A)	40.24°C	0.884
CL2	12.050V	5.053V	3.319V	5.131V	117.641W	86.174%	2251 RPM	33.0 dB(A)	47.97°C	230.28V
CL3	0.114A	0A	19.938A	0A	67.362W	80.205%	2337 RPM	35.0 dB(A)	42.39°C	0.841
CL3	12.048V	5.049V	3.31V	5.129V	83.987W	80.205%	2337 RPM	35.0 dB(A)	51.11°C	230.28V
CL4	62.512A	0A	0A	0A	749.359W	91.491%	3240 RPM	42.5 dB(A)	45.62°C	0.984
CL4	11.987V	5.009V	3.28V	5.09V	819.05W	91.491%	3240 RPM	42.5 dB(A)	55.54°C	230.27V

This PSU delivers its full power without any problems even under harsh operating conditions, but couldn't provide 110% of its maximum-rated capacity under high operating temperatures.

Light-Load Testing

We measure the PSU's efficiency at loads significantly lower than 10 percent of the maximum capacity—the lowest load the 80 PLUS standard measures. This is important for when a PC is idle with its power-saving features turned on.

Light Load Efficiency - 1st Player SFX 7.5 750W
Test	12V	5V	3.3V	5VSB	Power (DC/AC)	Efficiency	Fan Speed	PSU Noise	Temp (In/Out)	PF/AC Volts
20W	1.230A	0.492A	0.492A	0.195A	19.984W	66.686%	0 RPM	<6.0 dB(A)	38.43°C	0.62
20W	12.061V	5.082V	3.351V	5.132V	29.967W	66.686%	0 RPM	<6.0 dB(A)	36.09°C	230.25V
40W	2.709A	0.689A	0.69A	0.293A	39.985W	82.565%	0 RPM	<6.0 dB(A)	40.48°C	0.741
40W	12.062V	5.08V	3.349V	5.121V	48.429W	82.565%	0 RPM	<6.0 dB(A)	37.51°C	230.26V
60W	4.188A	0.887A	0.888A	0.391A	59.985W	87.006%	0 RPM	<6.0 dB(A)	43.28°C	0.809
60W	12.062V	5.075V	3.344V	5.111V	68.943W	87.006%	0 RPM	<6.0 dB(A)	39.94°C	230.27V
80W	5.664A	1.086A	1.087A	0.49A	79.929W	88.876%	1975 RPM	28.8 dB(A)	40.04°C	0.85
80W	12.059V	5.067V	3.338V	5.101V	89.935W	88.876%	1975 RPM	28.8 dB(A)	43.84°C	230.27V

Efficiency is high under light loads.

Super-Light Load Testing

We measure the PSU's efficiency with a 10 W load if its maximum power is 500 W or less in the following tests. If the PSU is stronger, we apply 2% of its maximum-rated-capacity load.

Super-Light Load Efficiency - 1st Player SFX 7.5 750W
12V	5V	3.3V	5VSB	Power (DC/AC)	Efficiency	Fan Speed	PSU Noise	Temp (In/Out)	PF/AC Volts
1.088A	0.211A	0.211A	0.044A	15.144W	73.028%	0 RPM	<6.0 dB(A)	23.52°C	0.798
12.079V	5.081V	3.352V	5.148V	20.739W	73.028%	0 RPM	<6.0 dB(A)	25.2°C	115.17V

The PSU easily breaks the 70% mark with 2% load.

5VSB Efficiency

5VSB Efficiency - 1st Player SFX 7.5 750W
Test #	5VSB	Power (DC/AC)	Efficiency	PF/AC Volts
1	0.1A	0.515W	69.031%	0.036
1	5.152V	0.746W	69.031%	230.28V
2	0.25A	1.285W	77.041%	0.077
2	5.141V	1.668W	77.041%	230.28V
3	0.55A	2.814W	80.146%	0.143
3	5.119V	3.511W	80.146%	230.28V
4	1A	5.084W	81.245%	0.204
4	5.085V	6.258W	81.245%	230.29V
5	1.5A	7.569W	82.399%	0.242
5	5.046V	9.185W	82.399%	230.29V
6	2.499A	12.414W	81.654%	0.281
6	4.968V	15.203W	81.654%	230.3V

The 5VSB rail is efficient.

Power Consumption in Idle and Standby

Idle / Standby - 1st Player SFX 7.5 750W
Mode	12V	5V	3.3V	5VSB	Power (AC)	PF/AC Volts
Idle	12.052V	5.079V	3.352V	5.157V	3.329W	0.142
Idle	12.052V	5.079V	3.352V	5.157V	3.329W	230.28V
Standby					0.092W	0.004
Standby					0.092W	230.28V