MSI MPG A1000G/A850G/A750G PCIE5
So, as we talked about, these new power supplies support PCIE5, ATX 3.0 compatible, 12VHPWR, and 80 Plus Gold Certified. Other notable features across the entire line are that they are a Single-Railed design, support 0% RPM fan mode, have a fluid dynamic bearing fan, 100% Japanese 105c Capacitors, are all a Full-Modular Design, and are in a compact size, even the 1000G. Let us discuss each of these things below.




The MPG 1000G PCIE5, MPG A850G PCIE5, and MPG A750G PCIE5 can hold up to 2x total power excursion and 3x GPU power excursion. What this means is that the GPU power can exceed that 3x power excursion we talked about that the PCI SIG defines, but it does not just stop there. The power supply can also deal with a 2x power excursion on all the other components combined as well, think CPU and other high-powered devices. That extends its ability to deal with total system power spikes in microseconds.
The MPG 1000G PCIE5, MPG A850G PCIE5, and MPG A750G PCIE5 have the full implementation and support of a native 16-pin 12VHPWR connector. It connects to the power supply side with the 16-pin connector, which includes data sense pins, and on the other end is also a 16-pin connector with data sense pins. On the MPG 1000G PCIE5 and MPG A850G PCIE5, it can deliver up to 600W of power, but on the MPG A750G PCIE5 it will only deliver up to 450W because the overall capacity of the PSU is lower. This new connector will work on upcoming video cards, but it also works on the GeForce RTX 30 series, despite the video cards themselves not having the 4 data sense pins (12-pins total) on the video cards.




The power supplies are all 80 Plus Gold Certified. The power supplies support a 0 RPM fan mode which will stop the fan’s operation when TDP is below 40%. This mode is on by default, but you can turn it off if you always want the fan on. All three power supplies utilize a fluid dynamic bearing fan to increase the life span and maintain low noise levels.




Another feature of the MPG A1000G PCIE5, MPG A850G PCIE5, and MPG A750G PCIE5 is that these are all a single rail power supply design. That means it uses a complete single rail of power across the 12V rail. If you look at the specs at the bottom, you will notice the full capacity of each one supplied on the 12V rail. The power supplies also use 100% Japanese 105c capacitors and solid capacitors.
All three power supplies are fully modular. These power supplies also have a compact design that is smaller than typical PSUs on the market. In the picture above you can see that all three power supplies measure just 5.9 inches in length and 3.4 inches in height, yes even the MPG A1000G PCIE5.
Multiple protection mechanisms are in place: OCP (Over Current Protection), OTP (Over Temperature Protection), OVP (Over Voltage Protection), OPP (Over Power Protection), UVP (Under Voltage Protection), and SCP (Short Circuit Protection).



The MPG A1000G PCIE5 is a 1000W power supply and 80 Plus Gold up to 90%, fan size is 135mm. The power supply measures 5.9 inches in depth and width and 3.4 inches in height. As you can see from the label it supports 1000W across the +12V rail at 83.5A and 120W across the +5V and +3.3V. It comes with 1x ATX 24-pin, 2x 4+4 EPS, 6x 6+2 PCIe, 1x PCIe 5.0 16-pin, 12x SATA, 4x Molex and 1x FDD. MSRP will be $199.99.
The MPG A850G PCIE5 is an 850W power supply and 80 Plus Gold up to 90%, fan size is 135mm. The power supply measures 5.9 inches in depth and width and 3.4 inches in height. As you can see from the label it supports 850W across the +12V rail at 70.8A and 120W across the +5V and +3.3V. It comes with 1x ATX 24-pin, 2x 4+4 EPS, 6x 6+2 PCIe, 1x PCIe 5.0 16-pin, 8x SATA, 4x Molex and 1x FDD.
The MPG A750G PCIE5 is a 750W power supply and 80 Plus Gold up to 90%, fan size is 135mm. The power supply measures 5.9 inches in depth and width and 3.4 inches in height. As you can see from the label it supports 750W across the +12V rail at 62.5A and 120W across the +5V and +3.3V. It comes with 1x ATX 24-pin, 2x 4+4 EPS, 6x 6+2 PCIe, 1x PCIe 5.0 16-pin, 8x SATA, 4x Molex and 1x FDD.

Discussion (19 replies)
Join Discussion →Alright, countdown to NA availability!
I updated the pricing info for A1000G PCIE5 in the review, and here is the link to The Official U.S Online Store for MSI where it is in stock.
https://us-store.msi.com/MPG-A1000G-PCIE5
Man, at US$200 for a new-spec 1000W PSU?
That's not even offensive, and approaching affordable.
Yep, almost makes me want to order one even though I don't really need one yet.
Thanks, @Brent_Justice for all these intro-breakdowns of new tech and architectures. There's a lot happening these days and it's nice having a quick resource to go back to and refresh with before making a purchase decision.
Almost a month later and still no sign of these. Has MSI given any word on when we'll start seeing these in stores?
With a 4090 on the way and no word from EVGA on a cable (possibly cablemod?) I was thinking about another PSU myself, but no word on availability. You would think these would be available once the new video cards hit the market.
Yes thst kinda annoys me to. I sent a duppprt request in a d got back. Use the adaptor.
Whatever keyboard you are using, you should douse it in fire. That, or maybe we should call 911, you may be having a stroke.
1000W models are going to become the BASELINE model in a couple of years.. Calling it now...
We're already more or less there; take the power limits off an i7 or R7 and a top-end GPU and you're already at 700W before the rest of the system.
This means that 850W is just enough, which to most of us means get the next highest capacity unit.
I'd only be comfortable with 850W or lower if power limits were planned in to the build.
The 1000w version of this PSU is selling ridiculously quick. I thought about getting one a few times, but I'd be pushing it with my current system. Price gouging is definitely not reserved for just GPU's this time. Too bad the higher wattage variants aren't available at all right now.
Remember when PSUs were that part that so many didn't pay attention to beyond a certain wattage or energy rating? Now with ATX 3.0 they've become the latest hot-ticket item. I, and others, noticed that one of those 4090 reports was from someone who managed to snag a 1300W MSI somehow, in China.
All these people grabbing these 1000W ATX 3.0 power supplies may regret it later on if they throw in a 4090 with their other high end components. I did many of calculators on my main system, and it was around 930 to 950W, but having the headroom is always best practice.
I totally agree. I feel I'm at the edge of the comfort zone with the 1000W one I have with my 5800X3D/3090 Ti. I want to drop a 1200-1300W in there when I can. My other rig has a 1200W (from the days when I ran 2-3 GPUs) but both are ATX 2.0.