MSI MPG A1000G Power Supply Review

The MPG A1000G is MSI's flagship PSU, with enough power to handle any of the current generation GPUs.

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MSI MPG A1000G
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Tom's Hardware Verdict

The MSI MPG A1000G offers high enough performance and has high build quality, along with enough power to support an energy-hungry system.

Reasons to buy

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    + Delivered full power at 47°C

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    + Good soldering and parts quality

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    + Fluid dynamic bearing fan

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    + Low vampire power consumption

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    + High power factor

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    + Tight +12V load regulation

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    + Good ripple suppression

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    + Decent transient response

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    + Low inrush current with 115V input

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    + Low leakage current

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    + ALPM support

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    + High number of connectors and cables

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    + 150mm distance between the peripheral connectors

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    + 10-year warranty

Reasons to avoid

  • -

    Not competitive overall performance

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    Low efficiency under light and super light loads

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    Efficiency could be higher at 5VSB

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    Not so quiet operation

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    Not tight load regulation at 5V and 3.3V

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    High inrush current with 230V input

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    Hold-up time needs to be a bit longer

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    Accurate but lower than 16ms power ok signal

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    There is room for improvement in transient response at 12V

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MSI continues its good path in the PSU market with the MPG A1000G. Still, there is much road to cover until it starts to trouble the intense competition by Corsair and EVGA. The overall performance of the A1000G is high enough, and its build quality is top-notch, something that is shown by its ten-year warranty, too. With a few fixes here and there, it could earn a place in our best PSUs article. Other good alternative options in this category are the Corsair RM1000x (2021) and the EVGA 1000 G6.

MSI enriches its MPG series with a 1000W power supply, with model number A1000G. The flagship of the MPG line uses a different exterior design, which is appealing to our eyes, at least. With the new Intel ATX spec and the PCIe 5.0 standard raising the Wattage bar for upcoming GPUs, all brands have to focus on stronger PSUs that will cope with the increased energy demands. 

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Aris Mpitziopoulos
Aris Mpitziopoulos
Contributing Editor

Aris Mpitziopoulos is a contributing editor at Tom's Hardware, covering PSUs.

2 Comments Comment from the forums
  • vinay2070
    Would AIBs be using the 12 pin GPU connectors for Ada? Or is it just nvidia reference cards? I read that Radeon cards will stick to the existing 8 pin connectors.
    Reply
  • dk382
    Thank you for the review. I've been looking at ATX 3.0/PCIe 5.0 power supplies, and I assume this one is very similar to the A1000G version with the new PCIe 5 connector that's available for $200.

    I face palmed when I first saw the fan grill on that PSU, came here, and was completely unsurprised to find that it's a little noisy. How much quieter would it be if it just had a normal fan grill instead of all that metal that's currently blocking the fan? What's the point of such a stylized design if it's just gonna be face-down in a PSU shroud anyway? All it's doing is adding unnecessary impedence when combined with your case's own PSU fan grill and dust filter.
    Reply