MSI MEG Ai1000P 1000 W Review - ATX 3.0 & PCIe 5.0 Ready

crmaris

on Oct 26th, 2022,

in Power Supplies.

Manufacturer: MSI

Fan Noise »

Efficiency

Using the results we gathered, 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.

The PSU achieves high enough efficiency with normal loads, but stays behind with light loads. With a 2% load, it easily passes the 70% mark.

10–110 % 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 - MSI MEG Ai1000P PCIe 5
Test	12V	5V	3.3V	5VSB	Power (DC/AC)	Efficiency	Fan Speed	PSU Noise	Temp (In/Out)	PF/AC Volts
10%	6.531A	1.974A	1.978A	0.989A	100.015W	85.836%	0 RPM	<6.0 dB(A)	44.86°C	0.879
10%	12.006V	5.067V	3.336V	5.055V	116.542W	85.836%	0 RPM	<6.0 dB(A)	40.44°C	230.38V
20%	14.109A	2.963A	2.969A	1.188A	199.972W	91.816%	0 RPM	<6.0 dB(A)	46.79°C	0.924
20%	11.983V	5.064V	3.335V	5.049V	217.861W	91.816%	0 RPM	<6.0 dB(A)	41.81°C	230.37V
30%	22.041A	3.459A	3.465A	1.388A	300.025W	93.09%	0 RPM	<6.0 dB(A)	47.29°C	0.943
30%	11.977V	5.06V	3.334V	5.044V	322.353W	93.09%	0 RPM	<6.0 dB(A)	41.91°C	230.36V
40%	29.974A	3.955A	3.959A	1.588A	399.753W	93.477%	0 RPM	<6.0 dB(A)	48.37°C	0.956
40%	11.962V	5.058V	3.334V	5.039V	427.762W	93.477%	0 RPM	<6.0 dB(A)	42.29°C	230.35V
50%	37.561A	4.946A	4.95A	1.788A	499.475W	93.684%	0 RPM	<6.0 dB(A)	49.05°C	0.959
50%	11.952V	5.055V	3.334V	5.035V	533.163W	93.684%	0 RPM	<6.0 dB(A)	42.6°C	230.33V
60%	45.188A	5.94A	5.943A	1.989A	600.026W	93.615%	787 RPM	13.3 dB(A)	43.36°C	0.961
60%	11.955V	5.051V	3.332V	5.029V	640.958W	93.615%	787 RPM	13.3 dB(A)	50.18°C	230.31V
70%	52.802A	6.938A	6.939A	2.191A	699.745W	93.373%	1144 RPM	25.4 dB(A)	43.57°C	0.97
70%	11.943V	5.046V	3.329V	5.022V	749.465W	93.373%	1144 RPM	25.4 dB(A)	50.81°C	230.29V
80%	60.508A	7.936A	7.934A	2.292A	799.787W	93.005%	1490 RPM	34.6 dB(A)	43.62°C	0.976
80%	11.930V	5.042V	3.327V	5.017V	859.988W	93.005%	1490 RPM	34.6 dB(A)	51.68°C	230.28V
90%	68.592A	8.437A	8.418A	2.394A	899.555W	92.599%	1788 RPM	39.3 dB(A)	44.07°C	0.985
90%	11.912V	5.038V	3.326V	5.013V	971.516W	92.599%	1788 RPM	39.3 dB(A)	53.18°C	230.27V
100%	76.413A	8.939A	8.932A	3.001A	999.607W	92.258%	2078 RPM	43.1 dB(A)	45.52°C	0.984
100%	11.908V	5.034V	3.325V	5V	1083.452W	92.258%	2078 RPM	43.1 dB(A)	55.55°C	230.25V
110%	84.181A	9.941A	10.019A	3.002A	1100.226W	91.838%	2325 RPM	47.0 dB(A)	46.97°C	0.984
110%	11.902V	5.03V	3.323V	4.997V	1198.033W	91.838%	2325 RPM	47.0 dB(A)	57.83°C	230.24V
CL1	0.117A	14.261A	14.321A	0A	121.307W	83.851%	698 RPM	8.7 dB(A)	42.49°C	0.879
CL1	11.995V	5.063V	3.331V	5.086V	144.722W	83.851%	698 RPM	8.7 dB(A)	48.98°C	230.38V
CL2	0.116A	21.713A	0A	0A	111.395W	82.533%	1285 RPM	29.4 dB(A)	43.14°C	0.887
CL2	12.006V	5.066V	3.333V	5.11V	135.462W	82.533%	1285 RPM	29.4 dB(A)	50.36°C	230.38V
CL3	0.116A	0A	21.79A	0A	73.993W	75.161%	1379 RPM	31.8 dB(A)	43.91°C	0.837
CL3	12.021V	5.069V	3.332V	5.06V	98.463W	75.161%	1379 RPM	31.8 dB(A)	52.96°C	230.39V
CL4	83.926A	0A	0A	0A	1000.175W	92.721%	2059 RPM	42.8 dB(A)	45.1°C	0.984
CL4	11.917V	5.041V	3.331V	5.047V	1078.768W	92.721%	2059 RPM	42.8 dB(A)	55.29°C	230.25V

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 when a PC is idle with its power-saving features turned on.

Light Load Efficiency - MSI MEG Ai1000P PCIe5
Test	12V	5V	3.3V	5VSB	Power (DC/AC)	Efficiency	Fan Speed	PSU Noise	Temp (In/Out)	PF/AC Volts
20W	1.236A	0.493A	0.495A	0.197A	20.003W	72.909%	0 RPM	<6.0 dB(A)	40.24°C	0.439
20W	12.015V	5.07V	3.336V	5.069V	27.494W	72.909%	0 RPM	<6.0 dB(A)	37.1°C	230.39V
40W	2.724A	0.69A	0.692A	0.296A	40.002W	75.498%	0 RPM	<6.0 dB(A)	40.72°C	0.636
40W	12.000V	5.069V	3.336V	5.066V	52.976W	75.498%	0 RPM	<6.0 dB(A)	37.38°C	230.39V
60W	4.211A	0.888A	0.89A	0.395A	60.001W	74.838%	0 RPM	<6.0 dB(A)	41.25°C	0.729
60W	12.000V	5.069V	3.336V	5.065V	75.167W	74.838%	0 RPM	<6.0 dB(A)	37.71°C	230.39V
80W	5.686A	1.085A	1.088A	0.494A	79.962W	82.908%	0 RPM	<6.0 dB(A)	41.78°C	0.832
80W	12.018V	5.069V	3.337V	5.063V	96.488W	82.908%	0 RPM	<6.0 dB(A)	37.97°C	230.39V

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. We apply 2% of its maximum-rated capacity load if the PSU is stronger.

Super-Light Load Efficiency - MSI MEG Ai1000P PCIe5
12V	5V	3.3V	5VSB	Power (DC/AC)	Efficiency	Fan Speed	PSU Noise	Temp (In/Out)	PF/AC Volts
1.472A	0.255A	0.255A	0.053A	20.115W	73.301%	0 RPM	<6.0 dB(A)	25.77°C	0.678
12.032V	5.06V	3.326V	5.061V	27.451W	73.301%	0 RPM	<6.0 dB(A)	23.78°C	115.15V

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

5VSB Efficiency

5VSB Efficiency - MSI MEG Ai1000P PCIe5
Test #	5VSB	Power (DC/AC)	Efficiency	PF/AC Volts
1	0.1A	0.511W	69.869%	0.018
1	5.108V	0.732W	69.869%	230.37V
2	0.25A	1.276W	74.521%	0.041
2	5.105V	1.709W	74.521%	230.37V
3	0.55A	2.804W	78.066%	0.084
3	5.097V	3.594W	78.066%	230.37V
4	1A	5.087W	78.61%	0.143
4	5.086V	6.47W	78.61%	230.37V
5	1.5A	7.612W	79.363%	0.198
5	5.074V	9.595W	79.363%	230.37V
6	3A	15.111W	79.685%	0.307
6	5.037V	18.96W	79.685%	230.37V

The 5VSB rail has decent efficiency. It would be nice to see above 80% though.

Power Consumption in Idle and Standby

Idle / Standby - MSI MEG Ai1000P PCIe5
Mode	12V	5V	3.3V	5VSB	Power (AC)	PF/AC Volts
Idle	12.041V	5.057V	3.324V	5.058V	5.816W	0.125
Idle	12.041V	5.057V	3.324V	5.058V	5.816W	230.38V
Standby					0.062W	0.002
Standby					0.062W	230.38V