According to the latest data from 80 PLUS, as of April 2026, 31 server power supply units (PSUs) worldwide have successfully attained the elite "Ruby" energy efficiency rating. This breakthrough signifies that data center power technology has officially entered the "Ultra-Titanium" era, establishing a new industrial benchmark for high-power AI computing clusters.
Among the 13 certified manufacturers, a distinct "duopoly" has emerged: Delta and Great Wall each hold 8 certifications, collectively accounting for more than half of all Ruby-rated products. They are followed by notable firms such as APLUSPOWER (3 models) and AcBel. Data indicates that the R&D capabilities for ultra-high-efficiency power supplies are highly concentrated among leading manufacturers with top-tier engineering prowess.
These Ruby-certified PSUs range from 1600W to 7500W, perfectly covering core requirements from general-purpose servers to 800V high-voltage AI training racks. In terms of technical specifications, the Ruby rating pushes the boundaries of efficiency: typical loads at 50% generally exceed 97% efficiency (peaking at 97.67%), far surpassing the 80 PLUS Titanium standard. Even more groundbreaking is that manufacturers like Great Wall have reduced standby power consumption to approximately 3W, while maintaining a Power Factor (PF) above 0.998 at half load and above, effectively achieving "zero harmonic pollution" for the power grid.
Analysis suggests that the "high efficiency across all loads, ultra-low standby, and extreme power factor" represented by the Ruby rating is rapidly evolving from individual "technology showcases" into mass-produced, mature categories. As the global supply chain shifts toward high-performance power solutions, Ruby is poised to become the de facto standard for reducing PUE in green data centers within the next two years.
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