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Black rectangular ATX power supply with gold fan grille and modular cable sockets

Seasonic

Seasonic PRIME PX-1300 1300W power supply

SKU CH-JTCM-760Y9 MPN PRIME PX-1300

Fully modular 1300 W ATX unit with 80 PLUS Platinum efficiency, a 135 mm fluid-dynamic-bearing fan that stays off until 40 % load.

  • TypeATX12V / EPS12V
  • Maximum Power1300 W
  • Fans135mm Fluid Dynamic Bearing Fan
  • Main Connector20+4Pin
  • +12V RailsSingle
  • PCI-Express Connector12 x 6+2-Pin

Options ATX 80+ Platinum (1300W) Black

  • Delivers 1300 W for demanding multi-GPU builds
  • 80 PLUS Platinum certified for 92 % efficiency at 50 % load
  • Fully modular cabling with 12 PCIe and 12 SATA connectors reduces clutter
  • 135 mm Fluid Dynamic Bearing fan stays off until 40 % load for silent operation
  • 150000 hour MTBF and premium protections ensure long-term reliability

1300 W Platinum ATX Power Supply

The Seasonic PRIME PX-1300 delivers 1300 W of continuous power through a single +12 V rail rated at 108 A. It carries 80 PLUS Platinum certification for up to 92 % efficiency at 50 % load. The fully modular design uses only the cables your build requires.

Check ATX 170 mm clearance and EPS12V needs

Verify that your case accepts a power supply up to 170 mm long and that your motherboard uses the standard 20+4 pin ATX and EPS12V connectors. The unit requires a 100-240 V AC source at 50 or 60 Hz and draws up to 15 A at the low-voltage end.

Ideal for multi-GPU workstations.

The twelve 6+2 pin PCIe connectors and twelve SATA power plugs support multi-GPU configurations and dense storage arrays. Hybrid fan control keeps the 135 mm FDB fan off until 40 % load. The 170 mm depth rules out most small-form-factor cases.

Highlights

  • Delivers 1300 W for demanding multi-GPU builds
  • 80 PLUS Platinum certified for 92 % efficiency at 50 % load
  • Fully modular cabling with 12 PCIe and 12 SATA connectors reduces clutter
  • 135 mm Fluid Dynamic Bearing fan stays off until 40 % load for silent operation
  • 150000 hour MTBF and premium protections ensure long-term reliability

Specifications

BrandSeaSonic
SeriesPRIME 1300W Platinum
ModelPRIME PX-1300 (SSR-1300PD)
TypeATX12V / EPS12V
Maximum Power1300 W
Fans135mm Fluid Dynamic Bearing Fan
Main Connector20+4Pin
+12V RailsSingle
PCI-Express Connector12 x 6+2-Pin
SATA Power Connector12
Max PSU Length170 mm
ModularFull Modular
Energy-Efficient80 PLUS PLATINUM Certified
Over Voltage ProtectionYes
Input Voltage100 - 240 V
Input Frequency Range50/60 Hz
Input Current15A - 7.5A
Output+3.3V@25A, +5V@25A, +12V@108A, [email protected] , +5VSB@3A
MTBF150,000 hours
ApprovalscTUVus, TUV, CB, CCC, BSMI, EAC, Energy Star, RoHS, WEEE, ErP Lot 6, REACH
ConnectorsPCIe Connectors x 8
Features80 PLUS Platinum certified
Micro Tolerance Load Regulation (1 %)
Cable-free Connection Design
Premium Hybrid Fan Control - Fanless until 40 % load
Multi-GPU setup
Gold plated connectors
Dimensions3.39" x 5.91" x 6.69"
Shipping weight4.14 kg
Package size340 × 206 × 135 mm

Other versions of this model

3 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

What cables come with the Seasonic PRIME PX-1300 and what must I buy separately?

The unit ships with a full modular cable set covering the 20+4-pin main connector, twelve 6+2-pin PCIe connectors and twelve SATA power connectors. No extra cables are required for standard builds.

How do I decide between the Platinum and Titanium versions of the PRIME 1300W?

The Platinum model is rated at 92 % efficiency at 50 % load, while the Titanium model reaches 94 % at the same load. Choose Platinum for high efficiency at lower cost.

What does the 1300 W rating mean once the PSU is installed in my PC?

It can deliver up to 108 A on the single +12 V rail, 25 A each on +3.3 V and +5 V, 0.5 A on -12 V and 3 A on +5 VSB, with the fan staying off until 40 % load.

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