Review Index:

Seasonic PRIME 750W Titanium Power Supply Review

Manufacturer: Seasonic

Introduction and Features

Introduction and Features


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The new Seasonic PRIME 750W Titanium PSU is simply the best power supply we have tested to date. Sea Sonic Electronics Co., Ltd has been designing and building PC power supplies since 1981 and they are one of the most highly respected manufacturers on the planet. Not only do they market power supplies under their own Seasonic name but they are the OEM for many other big name brands.

Seasonic’s new PRIME lineup is being introduced with the Titanium Series, which currently includes three models: 850W, 750W, and 650W (with more to follow). Additional PRIME models with both Platinum and Gold efficiency certifications are expected later this year with models ranging from 850W up to 1200W. Wow – we are already looking forward to getting our hands on a couple of these!

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The power supply we have in for review is the PRIME 750W Titanium. This unit comes with all modular cables and is certified to comply with the 80 Plus Titanium efficiency criteria; the highest available. The power supply is designed to deliver extremely tight voltage regulation on the three primary rails (+3.3V, +5V and +12V) and provides superior AC ripple and noise suppression. Add in a super-quiet 135mm cooling fan with a Fluid Dynamic Bearing and a 10-year warranty, and you have the makings for an outstanding power supply.

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Seasonic PRIME 750W Titanium PSU Key Features:

•    650W, 750W or 850W continuous DC output
•    Ultra-high efficiency, 80 PLUS Titanium certified
•    Micro-Tolerance Load Regulation (MTLR)
•    Top-quality 135mm Fluid Dynamic Bearing fan
•    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
•    Multi-GPU technologies supported
•    Gold-plated high-current terminals
•    Protections: OPP,OVP,UVP,SCP,OCP and OTP
•    10-Year Manufacturer’s warranty
•    MSRP for the PRIME 750W Titanium is $179.90 USD

Please continue reading our review of the Seasonic PRIME 750W Titanium PSU!

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Here is what Seasonic has to say about the new PRIME power supply line: “The creation of the PRIME Series is a renewed testimony of Sea Sonic’s determination to push the limits of power supply design in every aspect. This elegant-looking, exclusive lineup of new products will include 80 Plus Titanium – in the range of 650W to 850W, and Platinum-Gold-rated units in the range of 850W to 1200W, with excellent electrical characteristics, top-level components and fully modular cabling.

Seasonic employs the most efficient manufacturing methods, uses the best materials and works with most reliable suppliers to produce reliable products. The PRIM Series layout, revolutionary manufacturing solutions and solid design attest to the highest level of ingenuity of Seasonics’s engineers and product developers. Demonstrating confidence in its power supplies, Seasonic stands out in the industry by offering PRIME Titanium Series a generous 10-year manufacturer’s warranty period.

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August 19, 2016 | 09:08 PM - Posted by Anonymous (not verified)

I'm a little concerned about the switch from Sanyo Denki fans to Hong Hua, but given that warranty, it seems that Seasonic is confident that the fans will last.

August 20, 2016 | 05:01 AM - Posted by Moyeni (not verified)

If it's anyhting like their previous PSUs, the fan never spins anyway if you size it slightly bigger than your needs.

August 20, 2016 | 10:16 PM - Posted by BlackDove (not verified)

Just bought an X850 Gold dirt cheap on Newegg and it has the Sanyo Denki fan.

August 20, 2016 | 10:27 AM - Posted by Mageoftheyear (not verified)

I've been hoping you guys would review this PSU. Good job!

August 20, 2016 | 10:29 AM - Posted by Michael Mc Donnell (not verified)

How about coil whine? It will not show up in normal sound pressure measurements. Did you notice any coil whine?

I had extreme trouble finding a power supply without bad coil whine. I went through several very expensive and recognized brands before settling on the Corsair RM750.

August 20, 2016 | 10:21 PM - Posted by BlackDove (not verified)

Neither of my Seasonic X Series have coil whine and i am EXTREMELY sensitive to it. My ears fill with fluid sometimes as the result of a back and neck injury, so coil whine(or any high frequency sounds) actually cause me physical pain :)

From what i read, this Seasonic will not have coil whine since its coils are encased in something specifically to prevent vibration.

August 22, 2016 | 06:33 AM - Posted by Mad_Dane

Seasonic or something they have created for OEM is the only power supplies I buy, but usually they have a really understated design, a shame they have gone away from that, this is starting to remind me of something "gaming" branded!

August 22, 2016 | 12:21 PM - Posted by khanmein

i'm using Seasonic X-750 (KM3) but frankly speaking, Seasonic had the highest & the worst failure rate ever.

August 23, 2016 | 01:46 AM - Posted by BlackDove (not verified)

Wheres the data?

August 26, 2016 | 01:50 PM - Posted by Anonymous (not verified)

I had a X-series 750 blow a cap. but they replaced it really quick. Excellent Customer Service

August 30, 2016 | 07:26 AM - Posted by khanmein

dude, google is your friend. please don't denied that Seasonic higher failure rate.

by the way, i'm Seasonic fan-boy.

August 28, 2016 | 01:02 AM - Posted by Anonymous (not verified)

650W versions apparently got delayed because the cables had issues/defects during tests on a Chroma station.

Hence why only reviews of the 750W one are showing up for now.

December 23, 2016 | 12:13 PM - Posted by M-Bullseye (not verified)

I would like to see a review of the Seasonic Prime 1000W Platinum PSU once it's available.

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