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Black rectangular ATX power supply unit with fully modular cable connections and a 120mm cooling fan

SAMA

SAMA GT650-Black 650 W power supply

SKU CH-JAWG-1FGHE MPN GT650-Black

A 650 W fully modular ATX 3.1 power supply with dual Gold efficiency ratings, Japanese capacitors and a native 12V-2x6 connector for RTX 4090 graphics cards

  • TypeATX 12V v3.1
  • Maximum Power650 W
  • ModularFull Modular
  • Fans120mm ECO Fan
  • Main Connector1× 20+4pin
  • +12V Rails12V 3.0×1

Certification Series Gold GT Series

Wattage 650W

Color Black

  • Dual 80 PLUS and CYBENETICS Gold efficiency reduces heat and electricity cost
  • ATX 3.1 compliance supports modern high-performance components with stable power
  • Fully modular cables cut clutter and simplify system assembly
  • Japanese capacitors and 100000-hour MTBF deliver long-term reliability
  • Native 12V-2x6 connector powers RTX 4090 cards without adapters

Capacity and standard

The SAMA GT650-Black is a 650 W fully modular ATX 3.1 power supply built for modern desktop PCs. It meets both 80 PLUS Gold and CYBENETICS Gold efficiency targets and carries a 12V-2x6 connector for current graphics cards. The single 12 V rail delivers up to 3.0×1 output for stable loading.

Cabling and cooling benefits

Full modularity lets builders attach only the cables they need, reducing internal clutter and improving airflow. Japanese capacitors and a 120 mm ECO fan with fluid-dynamic bearing support quiet operation and long-term reliability. Hold-up time exceeds 11 ms and protections cover over-voltage and overload conditions.

Suitability and alternatives

This unit suits compact to mid-range gaming systems that require ATX 3.1 compliance and a native 12VHPWR cable for cards such as the RTX 4090. Builds needing higher wattage headroom or multiple 12VHPWR connectors should consider a larger capacity model.

Highlights

  • Dual 80 PLUS and CYBENETICS Gold efficiency reduces heat and electricity cost
  • ATX 3.1 compliance supports modern high-performance components with stable power
  • Fully modular cables cut clutter and simplify system assembly
  • Japanese capacitors and 100000-hour MTBF deliver long-term reliability
  • Native 12V-2x6 connector powers RTX 4090 cards without adapters

Specifications

BrandSAMA
ModelGT650-Black
SeriesGT Series
Part NumberGT650-BKGFFXX1-US
TypeATX 12V v3.1
Maximum Power650 W
ModularFull Modular
Fans120mm ECO Fan
Main Connector1× 20+4pin
+12V Rails12V 3.0×1
PCI-Express Connector2×6+2pin
Power Good SignalCybenetics Standard ++
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
2 x PCIe (6+2)
6 x SATA
2 x IDE
ColorBlack
Fan LEDNo
Max PSU Length150 mm
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)+(6+2P)*1 550+150mm
(SATA+SATA+SATA+IDE)*2 500+100+100+100mm
PFCactive PFC
EfficiencyMeet 80+ Gold Cybenetics Gold
Energy-EfficientMeet 80+ Gold Cybenetics Gold
Dimensions140×150×86mm
Package ContentGT650+Cable +accessory+Quick Start Guide
Weight2kg

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Questions about this item

Will this PSU fit a standard ATX case and work with a modern high-end graphics card?

Yes, it follows the ATX 12V v3.1 form factor and includes a native 12V-2x6 connector, so it fits standard ATX cases and connects directly to cards such as the RTX 4090 without adapters.

What does the 650 W rating mean for a system with a powerful GPU and CPU?

The single +12V rail delivers up to 650 W, with 3.3 V and 5 V rails rated at 20 A each, providing enough headroom for a high-end GPU and CPU combination under full load.

Is the unit quiet enough for a low-noise build?

The 120 mm ECO fan uses a fluid-dynamic bearing and auto speed control, while dual Gold certifications from 80 PLUS and Cybenetics indicate high efficiency that keeps waste heat and fan speed low.

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