Final Thoughts and Conclusions

Seasonic’s PRIME Series continues to impress us and the new PRIME Ultra 850W Titanium power supply just confirms that thanks to its outstanding performance and features. By adding Ultra to the PRIME Titanium Series name, Seasonic is differentiating these refined units, which will eventually replace the current models, and become Seasonic’s new flagship line of power supplies.

The PRIME Ultra 850W Titanium power supply excelled in every way throughout our testing. Here is a brief overview of the various areas in which we expect a PSU to perform and deliver. In each case the PRIME Ultra 850W Titanium power supply met or exceeded our expectations.

•    Tight voltage/load regulation (=0.5% is outstanding)
•    Excellent AC ripple and noise suppression – check
•    High efficiency – it doesn’t get any better than 80 Plus Titanium
•    Selectable fanless fan control mode – check
•    Very quiet, high quality FDB fan – check
•    Fully or semi-modular cable design – check
•    Flat ribbon-style and/or sleeved cables – check
•    High-quality components and excellent build quality – check
•    At least a 5-year warranty (12-Years is outstanding)

Once again, the electrical performance of the PRIME Ultra 850W Titanium power supply was spectacular. What really stands out is the super-tight voltage regulation (thanks to Seasonic’s Micro Tolerance Load Regulation), 80 Plus Titanium efficiency and excellent AC ripple and noise suppression. We also like the ability to choose whether or not to run in fanless mode or not (I personally like to have the fan spinning at all times to keep a little air moving). And the PRIME Ultra Titanium Series features fully modular, flat ribbon-style cables and a large, quiet cooling fan with a Fluid Dynamic Bearing. (Note: the PRIME Ultra series uses an upgraded fan with a lower max rpm for very quiet operation.) In addition to stellar performance, the PRIME Ultra 850W Titanium power supply offers a full complement of safety and protection features and comes backed by a 12-year warranty!

•    MSRP for PRIME Ultra 650W Titanium $159.90 USD
•    MSRP for PRIME Ultra 750W Titanium $179.90 USD
•    MSRP for PRIME Ultra 850W Titanium $209.90 USD
•    MSRP for PRIME Ultra 1000W Titanium $259.90 USD

Strengths:
•    650W, 750W, 850W or 1000W continuous DC output
•    Ultra-high efficiency, 80 PLUS Titanium certified
•    Micro-Tolerance Load Regulation (MTLR)
•    Quiet, high-quality 135mm fan with Fluid Dynamic Bearing
•    Premium Hybrid Fan Control (allows fanless operation at low power)
•    Superior AC ripple and noise suppression (under 20 mV)
•    Extended Hold-up time (above 30 ms)
•    Fully modular cabling design
•    Dedicated PCI-E connectors (one connector per cable)
•    Multi-GPU technologies supported
•    Gold-plated high-current terminals
•    Protections: OPP,OVP,UVP,SCP,OCP and OTP
•    12-Year Manufacturer’s warranty
Weaknesses :
•    None noted

Seasonic PRIME Ultra 850W Titanium Power Supply

And once again, our thanks to Seasonic for designing such a capable power supply and sending us one to review!

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