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Black rectangular ATX power supply with large side vents and a 120mm fan grille

Rosewill

Rosewill VMG850 850W 80+ Gold ATX 3.1 power supply

SKU CH-H2YE-BXYCQ MPN VMG850

An 850 W ATX 3.1 power supply with full modular cabling, 80 PLUS Gold efficiency, a native 12V-2x6 connector for PCIe 5.1 graphics cards and a 120 mm FDB fan in a 140 mm compact chassis

  • TypeATX 3.1 Compatible
  • Maximum Power850 W
  • Fans1 x 120mm FDBfan
  • PFCActive
  • Main Connector20+4Pin
  • +12V RailsSingle

Options ATX 3.1 80+ Gold (850W)

Les versions barrées existent, mais ne sont pas disponibles ici.

  • Delivers 850 W continuous power for demanding builds
  • 80 PLUS Gold certification reaches 85% efficiency at typical loads
  • Full modular cabling reduces clutter and improves airflow
  • Native 12V-2x6 connector supplies 600 W to PCIe 5.1 graphics cards
  • Compact 140 mm depth fits 35% smaller chassis designs

ATX 3.1 850 W power supply

The Rosewill VMG850 is an ATX 3.1 compatible, fully modular unit rated at 850 W. It carries 80 PLUS Gold certification and uses a single +12 V rail backed by 100 % Japanese electrolytic capacitors. A 120 mm FDB fan provides cooling in a compact 140 mm deep chassis suited to small-form-factor builds.

Pre-installation checklist

Verify that your case can accept a power supply up to 140 mm in length and that the motherboard requires a 20+4 pin main connector plus two 4+4 pin EPS connectors. Ensure the graphics card needs no more than three 6+2 pin PCIe connectors or the single 12+4 pin 12V-2x6 connector supplied. Confirm the unit’s SATA and peripheral connector counts match your storage and accessory needs.

Sustained-load behaviour

The platform is rated for up to 235 % power excursion and 300 % GPU power excursion, allowing brief peaks well above the continuous 850 W rating. Hold-up time is specified at a minimum of 16 ms, giving the system a short ride-through during mains interruptions. A six-protection suite covering OCP, OPP, OTP, OVP, SCP and UCP maintains safe operation during prolonged heavy loads.

Points forts

  • Delivers 850 W continuous power for demanding builds
  • 80 PLUS Gold certification reaches 85% efficiency at typical loads
  • Full modular cabling reduces clutter and improves airflow
  • Native 12V-2x6 connector supplies 600 W to PCIe 5.1 graphics cards
  • Compact 140 mm depth fits 35% smaller chassis designs

Caractéristiques

BrandRosewill
ModelVMG850
TypeATX 3.1 Compatible
Maximum Power850 W
Fans1 x 120mm FDBfan
PFCActive
Main Connector20+4Pin
+12V RailsSingle
SATA Power Connector6
CrossFireCrossFire Ready
Max PSU Length140 mm
ModularFull Modular
Hold-up Time16ms min.
EfficiencyUp to 85%
Energy-Efficient80 PLUS GOLD Certified
Over Voltage ProtectionYes
Overload ProtectionYes
Output+3.3V@18A, +5V@18A, [email protected] , [email protected] , +5VSB@3A
Connectors1 x 20+4-Pin Main Connector
2 x 4+4-Pin ATX12V / EPS12V Connector
3 x 6+2-Pin PCI-E Connector
1 x 12+4-Pin 12V-2x6 Connector
8 x 15-Pin SATA Connector
4 x 4-Pin Peripheral Connector
Poids d’expédition2.45 kg
Dimensions du colis273 × 203 × 114 mm

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Questions sur cet article

Does the VMG850 box include the 12V-2x6 cable for my GPU, or do I need to buy it separately?

The full-modular unit ships with one native 12+4-pin 12V-2x6 cable, three 6+2-pin PCI-E cables, two 4+4-pin EPS cables, eight SATA cables and four peripheral cables, so no extra GPU power cable is required.

Should I pick this 850 W model or a lower-wattage unit for a single modern graphics card?

At 850 W the supply delivers up to 600 W through the 12V-2x6 connector and supports 300 % GPU power excursion, giving ample headroom for a single high-end card and future upgrades.

What does the 80 PLUS Gold rating actually mean for my daily power draw?

The certification guarantees at least 85 % efficiency at typical loads, so less electricity is wasted as heat and the 120 mm FDB fan can run quieter during normal use.

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