The Sentey SDP850-SS is a rare case where the power supply was under labeled. It is sold as having the standard 80 Plus certification, but the manufacturer could easily achieve the 80 Plus Bronze certification, as efficiency was practically within 80 Plus Silver numbers. This happened because the Sentey SDP850-SS uses resonant, DC-DC, and synchronous designs, features that are usually only available in high-efficiency power supplies with at least the 80 Plus Bronze certification.
Our results are compatible with the design used by the power supply, however way above the numbers present in the 80 Plus certification report for this unit. The only explanation we have is that Super Flower changed the platform used in this power supply and decided to not re-certify the unit. (When power supplies are rebranded models, they are not retested: the 80 Plus report is the same as the original unit, only with the title changed.)
As a standard 80 Plus power supply, the price for the SDP850-SS seems a bit high. However, knowing that for loads up to 80% it can achieve efficiency comparable to 80 Plus Silver products, it is a bargain. Therefore, the Sentey SDP850-SS is a terrific power supply if you know what you are taking home.
Voltage regulation and noise levels were good for a mainstream power supply.