Rank #2 in Best PC Power Supply 2026: 10 Ranked, and the Specs That Don't Add Up
MSI MPG A850G PCIE5 850W 80 Plus Gold Modular
Price and rating as shown on Amazon when we collected them. Both change.
The MSI MPG A850G is an 850W fully modular ATX 3.0 power supply with 80 Plus Gold certification, PCIe 5.0 support, and a 10-year warranty. It finished second in our guide to PC power supplies, priced at £89.99 with a 4.7 out of 5 rating from 219 reviews. Its listing has one clear internal disagreement: the bullet text describes a 135mm fluid dynamic bearing fan, while the spec table lists a 120 Millimetres fan.
Everything on this page comes from the Amazon listing for this product, not from our own testing.
How those 219 ratings break down
An average hides its own shape. This is the spread behind the 4.7 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £89.99 |
|---|---|
| Rating | 4.7 out of 5 (219 reviews) |
| Output Wattage | 850 watts |
| 80 PLUS Certification | Gold (up to 90% efficiency) |
| Modularity | Full Modular |
| Fan Size (bullet text) | 135 mm fluid dynamic bearing |
| Fan Size (spec table, as listed) | 120 Millimetres |
| Warranty | 10 years |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“Incredible power supply, it is fully modular so you only use the cables that you actually need. It even comes with a high voltage cable for GPUs that demand extra energy. The power supply keeps quiet and it's easy to install, nothing but good things to say about it.”
Verified purchase“Great PSU, runs everything I need and will definitely run any other higher spec products when I decide to upgrade again. Cables provided are all super clean and well made, clear markings on what cable is for which component.Great purchase”
What it is up against
The rivals it was ranked against in Best PC Power Supply 2026: 10 Ranked, and the Specs That Don't Add Up.
Questions people ask
What is the fan size of the MSI MPG A850G?
The bullet text says 135mm fluid dynamic bearing fan, while the spec table lists 120 Millimetres. The listing does not resolve the difference.
How much power can the MSI MPG A850G deliver to a GPU?
The native 16-pin (12VHPWR) PCIe connector can feed up to 600W to a PCIe 5.0 GPU.
What is the warranty on the MSI MPG A850G?
The listing states a 10-year warranty.
Does the MSI MPG A850G have a zero RPM mode?
Yes, 0% RPM Mode automatically deactivates the fan when TDP falls below 40%.
What is the price and rating of the MSI MPG A850G?
It is priced at £89.99 and has a 4.7 out of 5 rating from 219 reviews.
What efficiency certification does the MSI MPG A850G have?
It is 80 PLUS Gold certified, with up to 90% efficiency.
Comments
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