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Silver SFX-L power supply with 120 mm fan and modular cable sockets

Seasonic

Seasonic FOCUS SGX-650 650W 80+ Gold SFX-L power supply

SKU CH-JBQP-VWA2K MPN FOCUS SGX-650

Delivers 650 W through a 125 mm SFX-L frame with full modular cabling, 80 Plus Gold efficiency and a 120 mm fluid-dynamic-bearing fan that runs in fanless, silent and cooling modes

  • TypeSFX 12 V / ATX 12 V
  • Maximum Power650 W
  • Fans1 x 120mm Fluid Dynamic Bearing fan
  • Main Connector20+4Pin
  • +12V RailsSingle
  • PCI-Express Connector4 x 6+2-Pin

Options SFX-L 80+ Gold (650W) Full-Modular

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  • Compact SFX-L design at 125 mm length fits small chassis
  • Full modular cabling reduces clutter and improves airflow
  • 80 PLUS Gold certification cuts wasted energy during conversion
  • Hybrid fan control runs fanless, silent or cooling modes
  • 100,000 hour MTBF at 25 °C signals long-term reliability

Compact SFX-L 650 W unit

This SFX-L power supply delivers 650 W of continuous power in a 125 mm long enclosure. It targets small-form-factor builders who need full modular cabling and 80 PLUS Gold efficiency. The single +12 V rail supplies 54 A for modern graphics cards. All cables detach to keep the chassis tidy.

Hybrid fan control under load

A 120 mm fluid-dynamic-bearing fan runs in three stages: fanless at low load, silent at moderate load, and cooling when thermals rise. The unit maintains stable output across the 100–240 V input range with full protection circuits including OPP, OVP, UVP, OCP, OTP and SCP. MTBF is rated at 100,000 hours at 25 °C excluding the fan.

650 W on a single +12 V rail

The defining specification is 54 A on a single +12 V rail, which determines whether the unit can power a given GPU and CPU combination. Four 6+2-pin PCIe connectors and six SATA connectors support multiple drives and high-end graphics. Full modularity lets builders install only the cables required.

Puntos fuertes

  • Compact SFX-L design at 125 mm length fits small chassis
  • Full modular cabling reduces clutter and improves airflow
  • 80 PLUS Gold certification cuts wasted energy during conversion
  • Hybrid fan control runs fanless, silent or cooling modes
  • 100,000 hour MTBF at 25 °C signals long-term reliability

Especificaciones

BrandSeaSonic
SeriesFOCUS SGX
ModelFOCUS SGX-650 (SSR-650SGX)
TypeSFX 12 V / ATX 12 V
Maximum Power650 W
Fans1 x 120mm Fluid Dynamic Bearing fan
Main Connector20+4Pin
+12V RailsSingle
PCI-Express Connector4 x 6+2-Pin
SATA Power Connector6
Max PSU Length125 mm
ModularFull Modular
Energy-Efficient80 PLUS GOLD Certified
Over Voltage ProtectionYes
ProtectionOPP, OVP, UVP, OCP, OTP, SCP
Input Voltage100 - 240 V
Input Frequency Range50/60 Hz
Input Current9 - 4.5 A
Output+3.3V@20A, +5V@20A, +12V@54A, [email protected] , +5VSB@3A
MTBF100,000 hours MTBF @ 25 °C, excl. fan
ApprovalscTUVus, TUV, CB, CCC, BSMI, EAC, CE
Energy Star, RoHS, WEEE, ErP Lot 6, REACH
Connectors1 x MB (24/20 pins)
1 x CPU (8/4 pins)
4 x PCIe (8/6 pins)
6 x SATA
3 x Molex
Cable Spec20+4Pin MB: One cable (350mm)
4+4Pin CPU: One cable (400mm)
2 x PCI-E 6+2Pin: Two cables (500mm)
3 x SATA: Two cables (600mm)
3 x Molex: One cable (700mm)
Features80 PLUS Gold certified
Compact SFX-L Size - 125 (L) x 125 (W) x 63.5 (H) mm
Tight Voltage Regulation
Cable-free Connection Design
S3FC - Fanless until 30 % load
SFX to ATX Expandability
Gold plated connectors
Dimensions2.50" x 4.92" x 4.92"
Peso de envío2.13 kg
Dimensiones del paquete277 × 175 × 94 mm

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Preguntas sobre este artículo

How quiet is the 120 mm fluid-dynamic-bearing fan when the 650 W SFX-L unit runs continuously under load?

The hybrid fan control runs in three stages: Fanless Mode at low load, Silent Mode at moderate load, and Cooling Mode only when temperatures rise, so the 120 mm fluid-dynamic-bearing fan stays off or spins slowly during typical all-day operation.

Which cables must I already have to install this fully modular SFX-L power supply in my case?

No cables are required beforehand; the box includes a 350 mm 20+4-pin motherboard cable, a 400 mm 4+4-pin CPU cable, two 500 mm PCIe 6+2-pin cables, two 600 mm SATA cables, and one 700 mm Molex cable.

Will the single +12 V rail rated at 54 A safely power an older graphics card that uses two 6-pin connectors?

Yes, the 54 A single +12 V rail delivers up to 650 W through the four 6+2-pin PCIe connectors, so two 6-pin plugs from an older card are well within the supply's capacity.

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