Today we have a power supply from MSI, The MPG A1000G. As the name may hint at it is indeed a 1000-watt power supply. Perfect for this generations video cards. I tend to overestimate my needs when it comes to power supplies. A power supply really is the heart of the system. Without nothing would function. Not even your RGB. You don’t even need a processor to get lights! Thats one of the reasons why they say never settle on an unproven power supply. Not only do they supply every part with power, but they could also damage system parts if they manufactured incorrectly. It may cost you more up front but could save you more in the long run.

We don’t have confirmed specs for the new graphics cards coming out. Who knows, a 1000-watt power supply may not be enough to even power the next flagship graphics card. There is a chance that if you stick with an 80 series or less you may still be able to use a PSU of this wattage. So even if you upgrade your system to this particular PSU, you may still be able to use it if you are interested in the next gen graphics cards. Now without further delay let dive into this review and see everything this PSU has to offer!

The MPG A1000G gaming power supply is proudly backed by a 10-year limited warranty, guaranteeing long term reliable operation. Aiming for unwavering product quality and performance stability, the MPG gaming power supply comes with 100% Japanese 105° C capacitors and solid capacitors. Organizing cables is often the most bothersome part of building a PC. With the MPG gaming power supply’s fully modular design, it means that only the connectors required by the build need to be used, significantly reducing cable clutter and simplifying the system’s overall build.


Supports the NVIDIA GeForce RTX™ 30 Series GPUs

Full modular cable design

Flat cable equipment

80 Plus Gold certified for high efficiency

100% all Japanese 105 °C capacitor

Active PFC design

Industrial level protection with OVP,OCP,OPP,OTP, SCP,UVP

LLC Half Bridge Topology with DC-DC module design


Specifications may differ depending on your location, and we reserve the right to change without notice. Please check with your local dealers for detailed specifications.

Due to photography and/or monitor settings, coloration of product images may vary from actual product.

Now let us move on and see the packaging and contents.


The PSU will arrive in a tightly packed package. I slightly shook the box to see if I heard any of the product moving around inside. Everything inside the package was well place and nothing had been damage in the transit. The unit is plenty safe while being shipped.



Power cable

x1 ATX 20+4 pin

x2 8 pin, 4+4 CPU

x7 PCI-E 6+2 pin

x4 Peripheral 4 pin

x12 SATA connection

x1 FDD


Let’s take a closer look at the MSI MPG A1000G Power Supply.
A Closer Look


Create and establish the most powerful setup with Powered by MSI products, including PC case, motherboard, liquid cooler, graphics card, and power supply unit.


The efficiency of your power supply directly influences your system’s performance and your power consumption. The 80 PLUS Gold certification promises lower energy consumption and higher efficiency.


The fan 0 RPM mode can stop the fan’s operation when TDP is below 40% to let you enjoy gaming in silence.


Aiming for unwavering product quality and performance stability, the MPG A1000G comes with 100% Japanese 105° C capacitors and solid capacitors.


The MPG A1000G’s fully modular design means that only the connectors required by the build need to be used, significantly reducing cable clutter and simplifying the system’s overall build.


The MPG A1000G’s single rail supply of power can properly deliver the power you need. For high-performance graphics cards and CPUs, the MPG A1000G’s 5 CPU & PCI-E slots are more than plenty.


Smaller than typical PSUs on the market, the new ATX series PSU’s compact sizing makes it an excellent fit for more PC cases. 150mm x 86mm!

Performance and Testing

Test setup and Testing Methodology

I do not have the specialized equipment for PSU testing (which costs thousands of dollars). So, the best way I could do test the PSU is by using what we’ve got. My testing method involves comparing the voltage and power consumption reading during idle and at full load. I know it’s not the most accurate method technically, but I think this simple method should provide some ideas of the performance of the power supply in terms of stability and power consumption.

The main thing to watch out for, is the fluctuation on the +12V line. If the +12V line drops too far below 12V during full load or large fluctuations in the V readings … then you’ve got trouble. The system may unstable, and you might also get random reboots.

We used AIDA64 and simultaneously ran both CPU and GPU stress test which produces 100% load. We then checked the voltage readings on AIDA64.


Voltage readings taken from ADIA64 at idle

+12V : 12.096V

+5V : 5.070V

+3V : 3.305V


Voltage readings taken from ADIA64 under load

+12V : 11.952 (-0.144V)

+5V : 5.070V (-0.000V)

+3V : 3.285V (-0.020V)

At full load for both CPU and GPU, the system is drawing a decent amount of power, and you can see that the voltages have dropped slightly. This is expected. What you’re looking for is to make sure that the +12V reading don’t drop too far below 12V. If it does, then the system may become unstable.

In this case, the MSI MPG A1000G Supply is holding up well at 11.952V

Now let’s move on to the Conclusion and Verdict!

Conclusion and Verdict

I would not recommend running this power supply like I did for the testing. I was using one PCI-e cable on each card, when it is recommended to use one cable per connector. But hey, its testing so let’s see what happens right? I didn’t notice any cables getting hot or any crashes, so this power supply was working quite well. As you can see, I was pulling 583 watts while I loaded the system with everything it had. It’s very hard to state whether a power supply will be viable when it’s so close to a new release of graphics cards. And if you have been following that, you know there may be some serious power requirements for those cards. So, me saying this power supply may serve you well, well into the future, may be an inaccurate statement. But as you can see from the testing, I just put it through, it performed pretty well. The silent fan feature will indeed keep your system noise to a minimum. Most power supplies I have had in the past have not been an issue when it comes to fan noise. I like that they included a switch so I could run the fan 24/7 if I chose to you. Not against a quite operation but I think it’s a huge mistake not to include an override to run the fan 24/7. Thankfully MSI has this feature, and I couldn’t be happier. There are two components I try and keep as cool as I can. The CPU and PSU. It’s proven the cooler these components run the more efficient they are.

The inside parts appeared to be high quality capacitators. These are crucial to having a healthy supply of power. This power supply looked to be built pretty solid. This power supply features a single rail, no need to worry about balancing your power from separate sources inside the PSU. Lastly, the modular cables and compact design, make this an idea choice for build.
Efficiency Requirements for 80Plus Certification

A higher wattage doesn’t necessarily mean you are getting a better power supply. So be careful if you aren’t getting one from a reputable brand. Also, if you go Gold or even higher Platinum you are getting a very efficient power supply. You can think of it in this way, an 80 Plus Gold power supply provides 90 percent of its rated wattage as power and loses the other 10 percent as heat.

I can’t tell you how many times I have been saved by a good power supply. I work with an open test bench and am always unplugging and plugging stuff in while my system is on. Having a capable Current protection can be big a sigh of relief. And this power supply has you cover with OVP, OPP, SCP, OCP, UVP, OTP protections. This can be a life saver, if you plug something in wrong!

Now for the big question will this power supply power the new cards? Yes, the power supply meets the requirements for the most power hungry cards and everything below. For the 3090Ti and the RX 6950 XT, you will need a minimum of 850W and 2 PCIe 8 pin connectors. This power supply offers the 1000W and has a total of 3 – 8 pin connectors. So, rest assured this power supply will work with the flagship cards from Nvidia and AMD.


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