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White fully modular ATX power supply with 120mm fan and sleeved cables

SAMA

SAMA GT850-White 850 W power supply

SKU CH-9M2W-GV12C MPN GT850-White

Fully modular 850 W ATX 3.1 unit with 80 PLUS Gold efficiency, Japanese capacitors and a native 12V-2x6 connector for RTX 4090 graphics cards

  • TypeATX 12V v3.1
  • Maximum Power850 W
  • ModularFull Modular
  • Fans120mm ECO Fan
  • Main Connector1× 20+4pin
  • +12V Rails12V 3.1×1

Certification Series Gold GT Series

Wattage 850W

Color White

  • 80 PLUS Gold efficiency keeps energy waste low
  • ATX 3.1 standard supports modern high-performance builds
  • Fully modular cabling reduces clutter inside the case
  • Japanese capacitors deliver stable power under load
  • Native 12V-2x6 connector plugs directly into RTX 4090 graphics cards

850 W ATX 3.1 power supply

The SAMA GT850-White is an 850 W fully modular ATX 3.1 unit with 80 PLUS Gold efficiency and Japanese capacitors. It includes a native 12V-2x6 connector for direct GPU power delivery and a 120 mm FDB fan with auto speed control. The design targets builders who want clean cable routing and modern connector support.

Suited to high-end GPU builds.

This unit fits systems built around a single flagship graphics card such as the RTX 4090 where ATX 3.1 compliance and a native 12V-2x6 cable simplify installation. Builders planning dual-GPU configurations or workloads that regularly exceed 850 W should consider a higher-capacity platform instead.

850 W continuous with >11 ms hold-up

The +12 V rail delivers the full 850 W rating with a hold-up time greater than 11 ms, giving comfortable headroom for a top-tier GPU and CPU combination. Sustained loads beyond the rated maximum will trigger overload protection, so the practical ceiling remains the stated 850 W figure.

Points forts

  • 80 PLUS Gold efficiency keeps energy waste low
  • ATX 3.1 standard supports modern high-performance builds
  • Fully modular cabling reduces clutter inside the case
  • Japanese capacitors deliver stable power under load
  • Native 12V-2x6 connector plugs directly into RTX 4090 graphics cards

Caractéristiques

BrandSAMA
ModelGT850-White
SeriesGT Series
Part NumberGT850-WHGFFXX1-US
TypeATX 12V v3.1
Maximum Power850 W
ModularFull Modular
Fans120mm ECO Fan
Main Connector1× 20+4pin
+12V Rails12V 3.1×1
PCI-Express Connector2×6+2pin
Power Good SignalATX
Hold-up Time>11ms
Over Voltage ProtectionYes
Overload ProtectionYes
Input Voltage100-240V
Input Frequency Range50-60Hz
Input Current10A
Output+3.3V@20A, +5V@20A, [email protected] , [email protected] , [email protected]
MTBFOver 100,000 hours at 25? and 100% load excluding the DC Fan.
Connectors1 x 24-pin ATX (24-pin)
2 x ATX 12V/EPS12V (4+4-pin)
1 x 12V-2×6
3 x PCIe (6+2)
6 x SATA
2 x IDE
ColorWhite
Fan LEDNo
Max PSU Length150mm
ProtectionOPP, OVP, UVP, OCP, OTP, SCP, OPP, SIP
Cable Spec(20+4P)*1 600mm
(4+4P)+(4+4P)*1 600+150mm
(12V-2×6)*1 600mm
(6+2P)*1 600mm
(6+2P)+(6+2P)*1 550+150mm
(SATA+SATA+SATA+IDE)*2 500+100+100+100mm
PFCactive PFC
Dimensions140×150×86mm
Weight2.12kg
Package ContentGT850+Cable +accessory+Quick Start Guide

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Questions sur cet article

Will the native 12V-2x6 connector power an RTX 4090 without an adapter?

Yes, the unit includes a native 12V-2x6 cable that plugs directly into the graphics card, so no adapter is required for an RTX 4090.

Does the 850 W rating cover a high-end GPU and CPU together under full load?

The single 12 V rail delivers the full 850 W, which is sufficient for a top-tier graphics card and a modern processor running simultaneously.

Is the power supply compatible with a standard ATX case and motherboard?

It follows the ATX 12V v3.1 form factor and provides a 20+4 pin main connector, fitting standard ATX cases and motherboards.

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