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Black rectangular ATX 3.1 power supply with single 120mm fan and fully modular cable sockets

SAMA

SAMA GP650 650W ATX 3.1 power supply

SKU CH-K2BB-2T12A MPN GP650

A fully modular 650 W ATX 3.1 unit with a 12V-2x6 connector for 450 W GPU power, Cybenetics Gold efficiency and a 120 mm FDB fan

  • Max wattage650 W
  • Modular cablingYes
  • SLI supportReady
  • CrossFire supportReady
  • Fan configuration1 × 120 mm
  • Power factor correctionActive

Certification Series Gold GP Series

Wattage 650W

Color Black

  • ATX 3.1 compliance supports next-generation GPUs with a 12V-2x6 connector rated for 450 W
  • Cybenetics Gold certification confirms over 90 % typical-load efficiency, lowering heat and power draw
  • Full Bridge LLC plus DC-DC topology delivers tight voltage regulation under heavy loads
  • Fully modular cables let you install only the leads you need for cleaner airflow
  • 120 mm fan with temperature-adaptive control keeps noise low during light and moderate workloads

Purpose-built ATX 3.1 unit

The SAMA GP650 is a 650 W ATX 3.1 power supply built for modern gaming PCs. Its fully modular design lets builders connect only the cables required. A native 12V-2x6 connector supplies up to 450 W to PCIe 5.1 graphics cards. The single +12 V rail simplifies power distribution for high-load components.

Cybenetics Gold thermals and noise

Cybenetics Gold certification confirms over 90 % efficiency at typical load, reducing waste heat. A 120 mm fluid-dynamic-bearing fan runs under temperature-adaptive control for quiet operation. Active PFC and Full Bridge LLC plus DC-DC topology keep voltage steady. Protections include over-voltage and overload safeguards with a hold-up time above 12 ms at full load.

12V-2x6 connector for next-gen GPUs

The decisive spec is the 12V-2x6 (12+4 pin) cable rated for 450 W, enabling direct power to the latest graphics cards without adapters. Combined with two 6+2 pin PCIe cables and six SATA connectors, the unit covers current and upcoming builds. ATX 3.1 compliance guarantees compatibility with new power-excursion requirements.

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 lineGP Series
Model nameGP650 Black
Product typeATX 3.1
Product colorBlack
Performance
Frequency50-60 Hz
Top fans RPMTba
Graphics
SLI supportReady
CrossFire supportReady
Ports & slots
PCIe power connectors3x 8-Pin (2x 6+2Pin, 1x 12+4Pin)
SATA power connectors6
12V power connector2x 4+4 Pin
Peripheral connector2x 4-Pin Molex
Power
Max wattage650 W
Modular cablingYes
Power factor correctionActive
Main power connector20+4 Pin
12V railsSingle
Power good signal> 12 ms
Power hold-up time> 12 ms @ 100% load
Efficiency certification80 PLUS GOLD Certified
Overvoltage protectionYes
Overload protectionYes
Supply voltage100–240 V
AC input frequency50-60 Hz
Rated input current10A
Rated power650 W
+3.3V max. current20A
+5V max. current20A
+12V1 max. current54.1A
+12V2 max. current54.1A
+12V4 max. current54.1A
-12V max. current0.4A
+5VSB max. current3A
Under voltage protectionYes
Over current protectionYes
Over power protectionYes
Size & build
Product weight1.5kg
Top fans size120 mm
Product dimensions140 × 150 × 86 mm
Compatibility
Haswell compatibilityYes
PSU length limit140 mm
In the box
Included itemsGP650+Cable +accessory+Quick Start Guide
Fans total quantity1
Environment & compliance
PSU noise ratingTemperature Adaption with Silent Cooling Fan
Regulatory approvalsCE, TUV, cTUVus, FCC, ICES, UKCA, EAC, RoHS, WEEE, ErP 2014
Top fans noise levelTba
Over temperature protectionYes
More details
Fan configuration1 × 120 mm
Mean time between failures100,000 h
Fan LEDARGB
Over load protectionYes
Short circuit protectionYes

Other versions of this model

5 more in the same range

Questions about this item

Will the 12V-2x6 connector deliver full power to a new GPU without an adapter?

The 12V-2x6 (12+4 pin) cable is rated for 450W and plugs directly into PCIe 5.1 graphics cards, so no adapter is required.

Does the fully modular design include all cables needed for a typical gaming build?

The box contains a 24-pin ATX cable, two CPU 4+4 pin cables, two 6+2 pin PCIe cables, one 12V-2x6 cable, and two SATA/Molex strings with six SATA plugs total.

Can this unit fit in a compact case with a 140 mm PSU clearance limit?

The power supply is 140 mm long, matching that exact clearance; verify your case specification allows the full length including cable bend radius.

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