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

Seasonic

Seasonic SSR-1300TR2 1300W 80+ Titanium ATX 3.1 power supply

SKU CH-4E02-SVB7G MPN SSR-1300TR2

Fully modular ATX 3.1 power supply delivering 1300 W with 80 PLUS Titanium efficiency and a 135 mm fluid dynamic bearing fan

  • Max wattage1300 W
  • Modular cablingFull Modular
  • Fan configuration1 × 135 mm Fluid Dynamic Bearing Fan
  • PSU length limit210 mm
  • Efficiency certification80 PLUS TITANIUM Certified
  • Product typeATX 3.1 Compatible

Model ATX 3.1 Titanium (1300W)

  • 80 PLUS Titanium certification keeps running costs low
  • 1300 W output powers demanding builds with headroom
  • Fully modular cables simplify routing and airflow
  • 135 mm fluid-dynamic-bearing fan runs quietly under load
  • ATX 3.1 and PCIe 5.1 compliance supports modern GPUs

High-Capacity ATX 3.1 Power Supply

The Seasonic SSR-1300TR2 delivers 1300 W of continuous power for high-end desktop builds. It targets enthusiasts running demanding GPUs and multi-core CPUs that require stable, efficient energy delivery. The unit carries 80 PLUS Titanium certification for ultra-high efficiency across typical loads. Its fully modular cabling design simplifies installation and cable management.

ATX 3.1 and PCIe 5.1 Interface Limits

This unit complies with the ATX 3.1 and PCIe 5.1 specifications for modern graphics cards. The standard allows transient power spikes that can reach multiple times the rated GPU power for brief periods. A quality 1300 W Titanium unit provides headroom for these excursions while maintaining tight voltage regulation. The MTLR figure of .5 % reflects the load-regulation capability of this design.

Pre-Installation Checks

Verify that your case can accommodate a power supply up to 210 mm in length. Confirm your motherboard and graphics card use the standard ATX 3.1 and PCIe 5.1 connectors supplied with the modular cable set. Ensure adequate airflow reaches the 135 mm fluid dynamic bearing fan for low-noise operation. The 12-year manufacturer warranty period begins from the date of purchase.

How it compares

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

Price $361.99
Pricier than about 82% 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
Model nameSSR-1300TR2
Product typeATX 3.1 Compatible
Power
Max wattage1300 W
Modular cablingFull Modular
Efficiency certification80 PLUS TITANIUM Certified
Size & build
Shipping weight5.81 kg
Package size457 × 199 × 127 mm
Compatibility
PSU length limit210 mm
More details
Fan configuration1 × 135 mm Fluid Dynamic Bearing Fan

Other versions of this model

5 more in the same range

Questions about this item

Will the 210 mm length fit my mid-tower case?

The unit is 210 mm long; check your case specification for maximum PSU length before ordering.

Does it include the 12VHPWR cable needed for newer graphics cards?

Yes, ATX 3.1 compliance means the required 12VHPWR connector is supplied in the fully modular cable set.

How loud is the 135 mm fan under heavy load?

The fluid dynamic bearing fan is designed for low noise; actual volume depends on case airflow and load level.

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