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Seasonic M12 II Bronze Evo Edition 850W PSU Review

The Seasonic M12 II Bronze Evo Edition 850W PSU is nicely finished with deep, thick paint. The product naming is highlighted in plain white on the black background.

The unit passed our ‘screwdriver’ stress test, which involves running a Philip’s head driver down the side of the chassis with weak to modest pressure. How often have you accidentally hit a power supply with some tools during a system build phase?

The paintwork didn’t scratch or mark at all. It is a very resilient finish.
A plain black fan resides behind the black metal grill above. We will take a closer look at the fan later in the review.
One side of the power supply is vented to help ensure there is adequate air flow. Offset at the side is a power button and connector.
This power supply is a pure modular design which is great news when it comes to cable routing. All of the connectors are clearly labelled and size specific to avoid any potential issues. The motherboard connector is connected top left, alongside 4 peripheral connectors. The row underneath comprises a 10 pin M/B connector and four CPU/PCI-E connectors.

Seasonic M12 II Bronze Evo Edition 850W
DC Output
Max Output
Total Power 150W Max 840W 6W 15W

The single +12V rail can deliver 70A which is 840W of the total output. Both +3.3V and +5V rails can deliver 25A each – identical to the Cooler Master V1000 1000W supply which we recently reviewed.

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