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Rectangular black ATX power supply with modular cable ports and a 135 mm fan grille

Seasonic

Seasonic SSR-1600PD2 1600W power supply

SKU CH-J2WX-41YWE MPN SSR-1600PD2

A 1600W ATX 3.1 power supply with 80 PLUS Titanium efficiency, a native 12V-2x6 connector for RTX cards, fully modular cabling and a Cybenetics Lambda A rated 135mm fluid dynamic bearing fan

  • TypeATX/EPS
  • Maximum Power1600 W
  • Fans1 x 135 mm Fluid Dynamic Bearing Fan
  • +12V RailsSingle
  • Max PSU Length210 mm
  • ModularFull Modular

Options ATX 3.1 Platinum (1600W)

  • Delivers 1600 W to power demanding builds
  • 80 PLUS Titanium certification keeps efficiency above 95 %
  • Cybenetics Lambda A rating ensures quiet operation
  • Fully modular design simplifies cable management
  • Native 12V-2x6 connector supports modern GPUs

1600W ATX 3.1 power supply

The Seasonic SSR-1600PD2 delivers 1600W through a single +12V rail rated at 133.3A. It meets ATX 3.1 and PCIe 5.1 specifications and includes a native 12V-2x6 connector for modern GPUs. Fully modular cabling keeps the build tidy.

Sustained load behaviour

80 PLUS Titanium and Cybenetics ETA Titanium certifications confirm efficiency above 95% across typical loads. The 135mm fluid dynamic bearing fan runs under Digital Hybrid Fan Control, achieving Cybenetics Lambda A noise levels even during extended high-wattage operation. Micro Tolerance Load Regulation holds voltage within 0.5%.

Compatibility checks

Verify the case can accommodate a 210mm deep ATX/EPS unit. Confirm the motherboard uses standard 24-pin ATX and 8-pin EPS connectors supported by the modular interface. Ensure the AC supply provides 100-240V at 50-60Hz with adequate circuit capacity for 15A at 100V or 10A at 240V input.

Highlights

  • Delivers 1600 W to power demanding builds
  • 80 PLUS Titanium certification keeps efficiency above 95 %
  • Cybenetics Lambda A rating ensures quiet operation
  • Fully modular design simplifies cable management
  • Native 12V-2x6 connector supports modern GPUs

Specifications

BrandSeaSonic USA
ModelSSR-1600PD2
TypeATX/EPS
Maximum Power1600 W
Fans1 x 135 mm Fluid Dynamic Bearing Fan
+12V RailsSingle
Max PSU Length210 mm
ModularFull Modular
Efficiency> 95%
Energy-Efficient80 PLUS TITANIUM Certified
PSU Noise LevelCybenetics A
Overload ProtectionYes
Input Voltage100 - 240 V
Input Frequency Range50 Hz - 60 Hz
Input Current15A @ 100V, 10A @ 240V
MTBF>100,000 Hours
Power Rating1600W
Features80PLUS Titanium certification, Cybenetics Titanium efficiency, Cybenetics Lambda A noise level, Digital Hybrid Fan Control, Fluid Dynamic Bearing fan, Fully Modular, Individual Black Cables with Braided Pattern, OPP/OVP/UVP/OCP/OTP/SCP protections, 12 Years Warranty
Dimensions8.3 x 6 x 3.4"
Weight6.17lbs
Frequency Range50 Hz - 60 Hz
+3.3V Max. Current25A
+5V Max. Current25A
+12V1 Max. Current133.3A
-12V Max. Current0.5A
+5VSB Max. Current3A
Fans Total Quantity1
Top Fans Size135mm
Top Fans Bearing TypeFluid Dynamic Bearing
Rear Fans Size135mm
Rear Fans Bearing TypeFluid Dynamic
Over Voltage ProtectionYes
Over Load ProtectionYes
Short Circuit ProtectionYes
Under Voltage ProtectionYes
Over Current ProtectionYes
Over Power ProtectionYes
Over Temperature ProtectionYes
Shipping weight5.90 kg
Package size457 × 191 × 127 mm

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Questions about this item

How loud is the 135 mm Fluid Dynamic Bearing fan under continuous full load?

Cybenetics Lambda A certification confirms very low operating noise even when the 1600 W unit runs all day. Digital Hybrid Fan Control keeps the fan speed proportional to load and temperature.

Which motherboard and GPU connectors do I need on my existing hardware for the native 12V-2x6 cable to work?

The PSU follows ATX 3.1 and PCIe 5.1 pin-outs, so your motherboard must provide a 24-pin ATX and EPS12V headers while the graphics card needs a 12V-2x6 or 12VHPWR receptacle.

Will the 210 mm length and single +12 V rail design fit and power an older ATX 2.x motherboard and PCIe 4.0 GPU without adapters?

Yes, the fully modular cables include standard 24-pin, EPS and PCIe 6+2 pin connectors that are backward compatible with ATX 2.x boards and PCIe 4.0 cards.

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