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

SAMA

SAMA GT650-Black 650 W ATX 3.1 Fully Modular Power Supply

SKU CH-01DM-SDFJW MPN GT650-Black

A fully modular ATX 3.1 power supply delivering 650 W with dual Gold efficiency certifications 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 White

  • Dual Gold efficiency keeps heat and noise low
  • ATX 3.1 compliance powers modern GPUs with stability
  • Native 12V-2x6 connector links RTX 4090 cards without adapters
  • Fully modular cabling cuts clutter for cleaner builds
  • Japanese capacitors and FDB fan deliver lasting reliability

650 W ATX 3.1 Fully Modular PSU

The SAMA GT650-Black delivers 650 W of continuous power through an ATX 3.1 compliant design with full modular cabling. Dual Gold certification from 80 PLUS and Cybenetics confirms high efficiency and low acoustic output. Japanese capacitors provide stable voltage regulation across the single 12 V rail.

Installation uses native 12V-2x6 GPU cable

Only the cables required for the build need to be connected, reducing clutter inside the case. The 120 mm ECO fan features auto speed control and FDB bearing for quiet operation. A hold-up time greater than 11 ms and full protection suite guard against voltage irregularities.

Suits builds with RTX 4090 class graphics

The native 12V-2x6 connector removes the need for adapters when powering modern GPUs. Input range of 100-240 V at 50-60 Hz supports global mains without switching. Systems requiring more than 650 W or additional PCIe connectors should consider higher-capacity units.

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-WHGFFXX1-US
Product typeATX 12 V v3.1
Product colorWhite
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 signalATX
Power hold-up time>11 ms
Efficiency certificationMeet 80+ Gold Cybenetics Gold
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
Size & build
Product dimensions140 × 150 × 86 mm
Product weight2kg
Compatibility
PSU length limit150 mm
In the box
Included itemsGT650+Cable +accessory+Quick Start Guide
Environment & compliance
PSU noise ratingCybenetics Standard ++
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 connect to an RTX 4090 without adapters?

Yes, it follows the ATX 3.1 form factor and includes a native 12V-2x6 cable for direct GPU connection.

What efficiency and noise certifications does it carry?

It holds both 80 PLUS Gold and Cybenetics Gold ratings, with Cybenetics Standard++ for acoustic performance.

What protections are built in for voltage spikes or overloads?

Over-voltage and overload protection are both present, and hold-up time exceeds 11 ms at full load.

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