MSI MPG A850GS PSU Model Spotted in New Product Brochure, A-GS Series Sports 235% Total Power Excursion

[T0@st]

MSI presented next-generation MEG and MPG series power supply models at CES 2025; both being range-topping examples: MEG Ai1600T and MPG A1250GS. January press material advertised the forthcoming new candidates with all sorts of impressive credentials: "certified by 80 Plus, Cybenetics, and PPLP and fully compliant with ATX 3.1 and PCIe (CEM) 5.1 standards, ready the power of your performance." Around late February, a slightly less powerful (1000 W) option was added to the new MPG line. The very expensive ($699 MSRP) flagship MEG Ai1600T SKU is already in the hands of evaluators; as disclosed by Wccftech. MSI's MPG series sits a notch down from premium-tier MEG offerings—earlier in the day, three "cost-effective" power supply models appeared online. A handful of fortunate souls—including chi11eddog—were blessed with early access to the manufacturer's freshly-published new product catalog. The excited reader shared a compelling feature: "got new PSU brochure from MSI. The new MPG GS series models feature 235% Power Excursion. Looks pretty good!"

A screenshot showed a trio of MPG A-GS options—including another addition; in 850 W form. As highlighted by chi11eddog's enthusiastic social media post, 235% total power excursions are listed on all three model specification sheets. Interestingly, "superior" MEG equivalents are marketed as: "fully compliant with the ATX 3.1 and PCIe 5.1 standards; hold up to 240% total power excursion to meet future-proof power requirements." MSI's web presences now list the MPG A850GS PCIE5 model, as well as the previously announced 1000 W and 1250 W SKUs. The three offerings are boldly provisioned with dual-native 12V-2x6 connectors and PCIe 5.1 compatibility—MSI reckons that the two power avenues are fit for purpose: "seamlessly supporting two NVIDIA GeForce RTX 50 Series graphics cards for AI and machine learning applications."



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[Prime2515102]

Is higher power excursion very important? If the devices used are compliant with the specification (200%, 300% GPU) then it shouldn't be necessary.

What are GPU's n' such spiking at these days? I haven't read a PSU review in a very, very long time; this is the first time I've heard power excursion mentioned.

 

[Cheeseball]

Is higher power excursion very important? If the devices used are compliant with the specification (200%, 300% GPU) then it shouldn't be necessary.

What are GPU's n' such spiking at these days? I haven't read a PSU review in a very, very long time; this is the first time I've heard power excursion mentioned.

GPUs (and possibly some other computer components, to a lesser extent) do spike high sometimes:



So, for this 850W PSU, it should be able to withstand a ~2000W total system spike. How often and for how long? For that question, I have no clue.

 

[Prime2515102]

GPUs (and possibly some other computer components, to a lesser extent) do spike high sometimes:

View attachment 389330

So, for this 850W PSU, it should be able to withstand a ~2000W total system spike. How often and for how long? For that question, I have no clueAccording to this fdf

According to this the 200% spec would be for 100μs.

 

[Cheeseball]

According to this the 200% spec would be for 100μs.

Well, that makes sense since these power spikes are momentary, hence spikes.

 

[JustBenching]

Is higher power excursion very important? If the devices used are compliant with the specification (200%, 300% GPU) then it shouldn't be necessary.

What are GPU's n' such spiking at these days? I haven't read a PSU review in a very, very long time; this is the first time I've heard power excursion mentioned.

Power excursion is an absolutely useless thing for the simple reason that your psu should always be a lot higher than your actual power draw for longevity, silent operation and reliability. If your system is drawing 500w you should be using a 750 - 850w psu, in which case power excursions ain't an issue.

 

[Caring1]

Instead of fixing the issue of high transient spikes, they throw expensive solutions at the consumer.

 

[Chomiq]

You know MSI, you could have just made Suprim a 2x12VHPWR GPU and bundle it with this PSU. Better for end user and more PSUs sold for you.

 

[_roman_]

Are there any other components in a computer with high wattage usage as a cpu or gpu? both change a lot workloads and dynamically change frequency. Therefore only both should have those high spikes.

I would not buy anything smaller as a 1050 W PSU for certain reasons. I hope people know what an efficiency curve is also.