This article explores the key features of 80 PLUS® Ruby certification and how Seasonic solutions address the growing demands of AI infrastructure and high-density data centers.
What is 80 PLUS® Ruby certification for power supplies?
80 PLUS® Ruby certification is the highest efficiency level for redundant data center power supplies within the 80 PLUS® certification program. As of now, Ruby is available exclusively for redundant data-center PSUs designed for environments with redundant infrastructure and rated for 230 V, 277 V, and 480 V AC or 380 V DC.
It’s important to understand how Ruby differs from other 80 PLUS® certification levels. It’s not aimed at basic desktop PCs or gaming PSUs. Its core use case is high-efficiency servers and data center systems, where even small energy losses can significantly affect overall power consumption and thermal load.
80 PLUS® Ruby certification evaluates specific aspects of PSU performance: energy efficiency and power factor. It does not assess the overall quality or reliability of the PSU. The certification itself does not define component quality or other aspects of PSU performance beyond its specific efficiency and power factor requirements.
Technical requirements and performance standards of 80 PLUS® Ruby certification
Under the 80 PLUS® Ruby certification specification, power supplies certified to the Ruby efficiency level must achieve 90% efficiency at 5% load, 91% at 10%, 95% at 20%, 96.5% at 50%, and 92% at 100% load. For data centers and AI infrastructure with high computing density, this level of efficiency helps reduce energy losses and heat generation.
Requirements have also been established for the power factor, which must reach 0.96 at 20%, 50%, and 100% load. A separate efficiency requirement at 5% load is important for server systems, which may operate at a significantly lower actual load than their maximum rated power.
For data centers, this has a direct practical impact. Higher efficiency means that a smaller portion of the electricity consumed is lost as heat within the PSU. On the scale of an infrastructure with thousands of servers, this helps keep overall power consumption, heat generation, and cooling demand lower. When you’re dealing with AI infrastructure, where GPUs and servers can be running under significant load 24/7, PSU efficiency becomes a key factor in the system’s overall energy efficiency.
What 80 PLUS® Ruby certification does not cover
80 PLUS® Ruby certification focuses on efficiency and power factor. It does not certify other aspects of PSU performance or quality, such as long-term reliability, component quality, noise and ripple, transient response, or protection features. These characteristics require separate testing and evaluation and should be considered independently when assessing a power supply for demanding data center applications.
Why high-efficiency power supplies are important for data center infrastructure
Power supply enhanced efficiency directly affects the overall data center energy efficiency level. When a power supply converts electrical energy with fewer losses, less of that energy is turned into heat. This puts less heat on the server infrastructure and helps minimize the energy required for cooling.
For large data centers, economies of scale are particularly important. Even a small increase in the efficiency of a single PSU can yield significant results when there are thousands of servers operating around the clock. This helps reduce overall power consumption and operating costs while maintaining a higher computing density.
For AI infrastructure, the meaning of efficiency is even higher. Powerful GPUs and AI accelerators generate high and sustained loads, so power loss and heat dissipation from the PSU become a significant factor in the system’s overall energy balance. That’s why 80 PLUS® Ruby standards were designed for high-efficiency, redundant power supplies for modern data centers.
How Seasonic power supplies meet data center server needs and 80 PLUS® Ruby certification requirements
At Computex 2026, Seasonic presented the 5200 W SIC-NRX522-22A63GT – a 54 V CRPS platform with 80 PLUS® Ruby certification, designed for modern AI infrastructure and high-performance computing systems.
The platform brings together high power capacity with impressive performance – a power output of 5200 W and an efficiency of 96.5% at 50% rated load. This results in significantly lower energy losses, heat generation, and overall electricity consumption in high-density data centers.
Beyond the 80 PLUS® Ruby certification, the CRPS (Common Redundant Power Supply) architecture features a modular, hot-swappable design and is engineered for 24/7 continuous operation. This design approach is especially supportive for mission-critical server infrastructure, where downtime must be minimized.
As AI servers and accelerated computing platforms require greater power density, Seasonic developed the platform for demanding AI and high-performance computing applications. The 5200 W CRPS platform is designed to support the demanding power needs of AI training and inference, as well as high-density computing configurations with multiple GPUs.
The platform also supports PMBus and Blackbox logging, providing telemetry and diagnostic information about PSU status, load conditions, and abnormal events. These are features of the Seasonic CRPS platform and are not part of the 80 PLUS® Ruby certification requirements.
Comparison of 80 PLUS® Ruby vs. 80 PLUS® Titanium certification level
80 PLUS® Ruby is the highest efficiency certification level in the 80 PLUS® program, but it focuses on a different use case than the previous levels. Titanium remains the highest tier for a wide range of high-efficiency desktops and workstations, while Ruby is geared toward the next level of energy efficiency specifically for redundant data center infrastructure.
Ruby’s main advantage over Titanium is evident at 50% load, where the efficiency requirement is 96.5% compared to 96% for Titanium, as well as at 5% and 20% loads. Ruby maintains at least 90% efficiency even at a 5% load, helping to reduce energy loss even in low-power modes.
How to choose a power supply for your data center equipment in 2026?
When choosing a power supply for the data center, don’t rely only on its nominal power capacity. Since data centers handle specific tasks and have custom requirements for power delivery, including extreme loads, several factors must be considered to make the right choice.
We suggest looking at these points:
- Power capacity. Choose the power capacity based on the actual and projected load of servers, GPUs, and AI accelerators.
- Energy efficiency. For high-density infrastructure, look for 80 PLUS® Ruby certification, which requires at least 96.5% efficiency at 50% rated load for compatible redundant data center PSUs.
- Redundancy. For mission-critical systems, use redundant PSUs to keep the equipment running even if one unit goes down.
- Power density. In high-density server racks, it is important to deliver the required power in a compact form factor without creating excessive thermal load.
- Load handling. AI and HPC systems require PSUs capable of consistently handling high and dynamic loads, including short-term power consumption spikes.
- Monitoring and management. Support for technologies such as PMBus helps monitor PSU parameters and system status in real time.
- Serviceability. Modularity and hot-swap capabilities are essential for data centers, as they make PSU replacement easier without long equipment downtime.
- Long-term reliability. Choose solutions designed for continuous 24/7 operation and tailored to the requirements of a specific server platform.
Business benefits of higher efficiency 80 PLUS® Ruby certified power supplies
Since 80 PLUS® Ruby delivers 96,5% efficiency under 50% load, only a small amount of the consumed electricity is lost as heat. In large server infrastructures, this can reduce overall energy consumption.
Lower thermal output also reduces the load on data center cooling systems. This is particularly important for AI infrastructure, as powerful hardware and GPUs run demanding tasks for hours on end. A more efficient PSU helps optimize the system’s overall energy balance and maintain higher computing density without driving up energy use.
Over time, this can result in significant cost savings, more efficient use of energy infrastructure, and less strain on cooling systems. That is why 80 PLUS® Ruby-certified PSUs play an increasingly important role in modern AI data centers and high-performance computing environments.
结论
80 PLUS® Ruby raises the bar for data center energy efficiency, balancing high efficiency with the needs of modern servers and AI-based applications. In environments where power, compute density, uptime, and power consumption control are critical, PSU efficiency becomes part of the broader infrastructure strategy. That is why Ruby-certified solutions, like Seasonic’s new platform, reflect the shift toward more efficient and scalable data centers.