Seasonic Prime ULTRA Platinum 850W Power Supply Review

1. Introduction2. Bundle & Cabling3. External4. Internal5. Methodology and Testing6. Closing Thoughts7. View All Pages

Recently Seasonic updated their flagship PRIME Titanium and Platinum series of power supplies and today we take a look at another model in these ULTRA ranges – this time in an 850 watt capacity. Their expensive 1000W Ultra Titanium unit impressed us immensely, but is the cheaper 850W Platinum another unit you need to consider for a new system build?

It seems I am constantly singing the praises of Seasonic, but its impossible to actually find a bad unit in their portfolio. I don't think I could say that about any other manufacturer. Their recent pairing with Phanteks will be interesting to watch in 2018.

Its worth pointing out that Seasonic supply these review units from Amazon so they can't really be considered ‘golden reviewer samples'. They arrive at our doorstep in an immediately recognisable Amazon box we all know and love.

SSR-850PD (Ultra)

Technical Specifications
80PLUS®		Platinum
Cybenetics Efficiency Level		TBA
Cybenetics Noise Level		TBA
Form Factor		Intel ATX 12 V
Dimensions		170 mm (W) x 150 mm (L) x 86 mm (H)
Fan Information	Fan Size	135 mm
	Fan Control	Premium Hybrid Fan Control
	Fan Bearing	Fluid Dynamic Bearing
	Life Expectancy	50,000 hours at 40 °C, 15 % – 65 % RH
Cable Information	Modularity	Fully Modular
	Cable type	Flat black cables
Electrical Features	Operating Temperature	0 – 50 °C (derating from 100 % to 80 % from 40 °C to 50 °C)
	MTBF @ 25 °C, excl. fan	150,000 hours
	AC Input	Full Range
	Protection	OPP, OVP, UVP, OCP, OTP, SCP
Safety and Environmental	Safety and EMC	cTUVus, TUV, CB, CCC, BSMI, EAC, CE
	Environmental Compliance	Energy Star, RoHS, WEEE, ErP Lot 6, REACH
Warranty		12 Years

Review photography handled in house at KitGuru with a Leica S series medium format camera and S series prime lens. Please do not use any of the images within this review without express permission.

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