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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Performance Rating

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The overall performance is not that far from other offerings, but it is not competitive. 

Noise Rating

The graph below depicts the cooling fan's average noise over the PSU's operating range, with an ambient temperature between 30 to 32 degrees Celsius (86 to 89.6 degrees Fahrenheit).

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Given its capacity, it is not super-noisy, but there is room for improvement in this section. The king, by far, in noise output is the Asus Rog Thor model, thanks to its beefy heatsinks. 

Efficiency Rating

The following graph shows the PSU's average efficiency throughout its operating range with an ambient temperature close to 30 degrees Celsius.

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The average efficiency is high enough for a Gold-rated unit. 

Power Factor Rating

The following graphs show the PSU's average power factor reading throughout its operating range with an ambient temperature close to 30 degrees Celsius and 115V/230V voltage input. 

The APFC converter does a good job, especially with 230V input. 

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Contributing Editor

Aris Mpitziopoulos is a Contributing Editor at Tom's Hardware US, covering PSUs.

  • 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.
  • 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.