Review Index:

Seasonic PRIME Ultra 750W Titanium Power Supply

Author: Lee Garbutt
Manufacturer: Seasonic

Specifications and Packaging


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The Seasonic PRIME Ultra 750W Titanium power supply is rated for a combined, continuous output power of up to 750W at 40°C operating temperature (50°C when operated below 80% load). All of the PRIME Titanium Series PSUs incorporates a single +12V rail.  The PSU includes universal AC line input (automatically adjusts the AC line voltage) and active PFC (.95% to 1.00%), which makes the unit more environmentally friendly to the local power grid.  

Seasonic PRIME Ultra 750W Titanium PSU Specifications (from the Seasonic website):

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Packaging and Parts

The PRIME Ultra Titanium power supply arrived securely packed inside a shrink-wrapped retail box highlighting the unit’s main features and specifications.  

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The power supply is protected by thick foam inserts and wrapped in a classic black velvet bag with the Seasonic logo. The modular cables are packed in a little black stuff-sack. In addition to the power supply, the box contains a power cord, mounting screws, Seasonic case badge and sticker, wire ties, Velcro cable wraps, easy-tester, a multi-language User Manual, Quick Installation Guide, and modular cables.

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(2) 4+4 pin CPU, (1) 24-pin ATX, and (4) 6+2 pin PCI-E Modular cables

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(3) SATA and (3) Molex peripheral Modular cables

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July 2, 2018 | 11:50 AM - Posted by LauRoman

I just wonder how are you going to clean, while still keeping it under warranty, something that has a 12 year warranty.

July 2, 2018 | 03:50 PM - Posted by Tantor (not verified)

I have an original Prime 650 (not Ultra) and would like to know specifically how they differ.

It would seem the Ultra is just a Prime, with a couple of meaningless upgrades. Is this true?

July 3, 2018 | 04:25 PM - Posted by Lee Garbutt

Yes, as we said above, the Ultra is an upgraded PRIME. Along with some minor tweaks to the design (Seasonic does not specify exactly what) the main difference is the longer 12-year warranty - I wouldn't call that meaningless. If you have an original PRIME you should be well served for many years to come.

July 4, 2018 | 12:35 PM - Posted by Jabbadap

They did specify it, when they released upgraded Ultra line. See:

July 9, 2018 | 03:18 AM - Posted by Dark_wizzie

Are the PSUs really that quiet? Basically not audible, quieter than the room? My computer's fan go at 450RPM and I have no HDDs to make spinning noises anymore.

July 13, 2018 | 10:34 AM - Posted by Lee Garbutt

Yes, they are very quiet. But sound/noise is subjective. Even though the SPL numbers are hard data different people respond differently to sound. To my ears, this PSU was very quiet - silent until the fan kicked in (no coil whine or electro-mechanical noise). The test lab is relatively cool and quiet (fairly constant 73 deg and 27 dBA) - to the point I opt to turn off the building A/C air handler during testing. Both the background temp and sound level will contribute to your experience of how loud a system is. Hope that helps answer your question.

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