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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

  • Max wattage650 W
  • Power efficiencyMeet 80+ Gold Cybenetics Gold
  • Modular cablingFull Modular
  • Fan configuration120 mm ECO Fan
  • Main power connector1× 20+4pin
  • 12V rails12 V 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.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $52.99
Cheaper than about 90% of the 10,869 comparable items (median $142.99).
Max wattage 650 W
Lower than about 70% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameSAMA
Product lineGT Series
Model nameGT650-Black
Part numberGT650-BKGFFXX1-US
Product typeATX 12 V v3.1
Product colorBlack
Ports & slots
PCIe power connectors2 × 6+2pin
Output type+3.3 V@20A, +5 V@20A
Connection types1 × 24-pin ATX (24-pin)
2 x ATX 12 V/EPS12 V (4+4-pin)
1 × 12 V-2 × 6
2 x PCIe (6+2)
6 x SATA
2 x IDE
Power
Max wattage650 W
Power efficiencyMeet 80+ Gold Cybenetics Gold
Modular cablingFull Modular
Main power connector1× 20+4pin
12V rails12 V 3.0 × 1
Power good signalCybenetics Standard ++
Power hold-up time>11 ms
Overvoltage protectionYes
Overload protectionYes
Supply voltage100-240 V
AC input frequency50-60 Hz
Rated input current10A
Built-in protectionOPP, OVP, UVP, OCP, OTP, SCP, OPP, SIP
Power factor correctionActive PFC
Efficiency certificationMeet 80+ Gold Cybenetics Gold
Size & build
Product dimensions140 × 150 × 86 mm
Product weight2kg
Compatibility
PSU length limit150 mm
In the box
Included itemsGT650+Cable +accessory+Quick Start Guide
More details
Fan configuration120 mm ECO Fan
Mean time between failuresOver 100,000 h at 25? and 100% load excluding the DC Fan.
Fan LEDNo

Other versions of this model

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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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