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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.

  • Max wattage1300 W
  • Modular cablingFull Modular
  • Fan configuration135 mm Fluid Dynamic Bearing Fan
  • Main power connector20+4Pin
  • 12V railsSingle
  • PCIe power connectors12 × 6+2-Pin

Model 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.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $237.99
Pricier than about 70% of the 10,869 comparable items (median $142.99).
Max wattage 1300 W
Higher than about 91% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameSeaSonic
Product linePRIME 1300 W Platinum
Model namePRIME PX-1300 (SSR-1300PD)
Product typeATX12 V / EPS12 V
Ports & slots
PCIe power connectors12 × 6+2-Pin
SATA power connectors12
Output type+3.3 V@25A, +5 V@25A, +12 V@108A, +5VSB@3A
Connection typesPCIe Connectors x 8
Power
Max wattage1300 W
Modular cablingFull Modular
Main power connector20+4Pin
12V railsSingle
Efficiency certification80 PLUS PLATINUM Certified
Overvoltage protectionYes
Supply voltage100–240 V
AC input frequency50/60 Hz
Rated input current15A - 7.5A
Size & build
Product dimensions3.39 in × 5.91 in × 6.69 in
Shipping weight4.14 kg
Package size340 × 206 × 135 mm
Compatibility
PSU length limit170 mm
Environment & compliance
Regulatory approvalscTUVus, TUV, CB, CCC, BSMI, EAC, Energy Star, RoHS, WEEE, ErP Lot 6, REACH
More details
Fan configuration135 mm Fluid Dynamic Bearing Fan
Mean time between failures150,000 h

Other versions of this model

3 more in the same range

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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