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Cooler Master MWE Gold 850 V3 power supply: features, specs and fit
An 850W fully modular ATX 3.1 power supply with 80 Plus Gold efficiency, a native 90-degree 12V-2x6 cable and zero-RPM fan mode. What the specs mean.
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The Cooler Master MWE Gold 850 V3 is an 850-watt, fully modular ATX power supply for desktop PCs. It supports the ATX 3.1 standard and comes with a native 12V-2x6 graphics cable, so it is aimed at builds with a modern, power-hungry graphics card. Here is what its features mean.
What 850W and modular mean
The wattage is the total power the unit can deliver. A larger graphics card and processor together draw more than a basic office PC, so builders choose a power supply with some headroom over their expected load. Full modular means every cable detaches, so you plug in only what you need. That tends to give a tidier case and better airflow.
ATX 3.1 and the 12V-2x6 connector
ATX 3.1 is an update to the power supply standard that, among other things, sets requirements for handling the brief power spikes modern graphics cards can create. Cooler Master says the unit delivers up to 600W to a GPU. The 12V-2x6 connector (listed as PCIe 5.1) is the single-cable connector used by current high-end graphics cards. Cooler Master's version has a 90-degree angled end, which it says improves electrical durability. The angle also makes it easier to route the cable beside a card without a sharp bend.
80 Plus Gold efficiency
80 Plus is a certification of how efficiently a power supply converts wall power into the DC power a PC uses. Gold means at least about 87 to 90% efficiency at typical loads, and Cooler Master cites roughly 90%. It also says the unit can achieve Titanium-level efficiency at light loads in a 115V test. Higher efficiency means less energy lost as heat. The internal design uses an APFC half-bridge LLC converter with DC-to-DC output.
Cooling and noise
Cooler Master lists a hexagonal fan cover with 80% airflow intake and a dedicated heatsink to improve thermal performance. A zero-RPM mode keeps the fan stopped at low loads, which means silence during light use, and the fan starts as the load and temperature rise. The listing also mentions a 10-year warranty; check the terms with the manufacturer.
Size and case fit
The listing gives dimensions of about 7.1 x 5.9 x 3.4 inches (18 x 15 x 8.6 cm) and a weight of 5.8 lb (about 2.6 kg). That is the common ATX form factor, so it fits most standard ATX cases, but check your case's power supply bay and the cable clearance.
Who it suits
It suits builders putting together or upgrading a mid-range to high-end gaming or creative PC, especially one with a recent graphics card that uses the 12V-2x6 connector. It also suits anyone who wants a quiet unit at idle.
What to check before you buy
- Total power: add up your CPU and graphics card power draw figures and leave headroom.
- GPU connector: confirm your card uses 12V-2x6 or 12VHPWR, or check what adapters are needed.
- Cables: count the SATA, PCIe and CPU connectors you need.
- Case: check the ATX PSU bay length and the room for the angled connector.
- Wall supply: check your local voltage and outlet.
- Compatibility claims: the listing names specific graphics cards; check the manufacturer's guidance for your model.
The short version
- 850W fully modular ATX power supply, ATX 3.1 compliant.
- Native 90-degree 12V-2x6 (PCIe 5.1) cable for up to 600W to the GPU.
- 80 Plus Gold efficiency, around 90%.
- Zero-RPM fan mode, hexagonal fan cover and a dedicated heatsink.
- 10-year warranty, according to the listing.
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