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

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.