Seasonic PRIME RX-1600 Becomes First 115V PSU to Earn 80 PLUS Ruby Certification

The 80 PLUS Ruby efficiency standard now covers 115V AC-DC power supplies, a shift that matters because it sets a new benchmark for data center energy savings at common enterprise voltages. Seasonic has achieved this milestone with its PRIME RX-1600, which is the first product to earn the certification for the 115V Internal (Non-Redundant) category. This expansion allows facility operators to prioritize efficiency in standard 115V infrastructure, not just high-voltage or DC setups. These certification updates indicate where hardware manufacturers are focusing their engineering efforts to reduce operational costs.

Enterprise power supply achieves strictest efficiency tier for standard voltage

Seasonic markets the unit as the PRIME ENTERPRISE RX-1600 for its business line. The power supply addresses the growing demand for highly efficient power delivery in modern server racks. By achieving Ruby status, the unit demonstrates that 115V platforms can meet the strictest efficiency tiers previously reserved for higher voltages. The RX-1600 serves as a key component for facilities aiming to minimize energy waste in their primary power distribution chains.

Specifications

• 80 PLUS Ruby Certification (115V Internal): First product to achieve Ruby certification for 115V Internal (Non-Redundant) power supplies
• Efficiency Requirements (115V): 85% at 5% load, 91% at 10% load, 93% at 20% load, 95% at 50% load, 91% at 100% load; PF >= 0.95 at 20% load
• Future Voltage Support: 800V DC power supplies expected to support Ruby certification

The Ruby certification requires specific efficiency thresholds across various load points. At 5% load, the unit must reach 85% efficiency. It must hit 91% at 10% load and 93% at 20% load. The standard demands 95% efficiency at 50% load, which is the half-load point. At full 100% load, the efficiency must remain at 91%. Additionally, the power factor must be at least 0.95 at the 20% load point.

This certification builds on the Ruby tier introduced in March 2025 for data center voltages like 230V, 277V, 480V AC-DC, and 380V DC. The CLEAResult organization expanded the criteria to include 115V AC-DC supplies to close the efficiency gap in common enterprise environments. Future 800V DC power supplies are also expected to support Ruby certification. These developments indicate an industry push toward higher efficiency across major power supply categories.

The PRIME RX-1600 stands as the first confirmed 115V Internal (Non-Redundant) power supply to meet the Ruby standard. This achievement demonstrates Seasonic's capability to produce high-efficiency units for the enterprise market. The expansion of the Ruby tier to 115V establishes a benchmark for other manufacturers. Future releases from other vendors will be observed to see if they meet this new efficiency benchmark.