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Seasonic FOCUS PLUS Gold (FX) 650W PSU Review

Author: Lee Garbutt
Manufacturer: Seasonic

Specifications and Packaging

The Seasonic FOCUS PLUS Gold 650W power supply is rated for a combined, continuous output power of up to 650 watts at 50°C operating temperature. The PSU incorporates a single +12V rail that can deliver up to 54A (648W) on the +12V output.  The PSU includes universal AC line input (automatically adjusts to the AC line voltage between 100 and 240 VAC) and active PFC, which makes the unit more environmentally friendly to the local power grid.  

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Specifications (from the Seasonic website):

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Packaging and Parts

The Seasonic FOCUS PLUS Gold 650W power supply was shipped to us straight from Newegg and arrived packed inside a standard retail box showcasing the unit’s features and specifications.  

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The power supply is protected by thick foam inserts and enclosed in a black fabric bag.

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In addition to the power supply, the box contains a power cord, mounting screws, a User Manual, wire ties, cable ties, FOCUS sticker, and a bundle of modular cables in a separate blackfabric storage bag.

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(2) PCI-E 8/6-pin cables x 2, (1) CPU 8/4-pin cable, and (1) 24-pin MB cable

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(2) SATA cables, (1) Peripheral cable, and (1) FDD adapter

The FOCUS PLUS Gold 650W power supply comes with a good assortment of seven modular cables and one FDD adapter. (See table above for connector count and cable lengths.)

Video News

July 3, 2017 | 03:11 PM - Posted by JReese

Good read - and good to see Seasonic on top of their game yet. I'm due for a new build soon and this looks like a really good option.

My main gaming PC is running a 10 year old Seasonic M12 SS-600HM and it's still going strong through a couple board/CPU upgrades and multiple graphics card upgrades.

July 3, 2017 | 03:18 PM - Posted by Donald Trump (not verified)

It is good that PSU manufacturers understand that the 230 mm power supplies of half a decade ago are not really needed anymore. Sure, it may look cool to some because they believe bigger to be better, but a short power supply for anything under a kilowatt is just fine given proper design.

July 4, 2017 | 03:07 AM - Posted by Cyric (not verified)

I just need a reason to change my 7 year old seasonic that is serving its 3rd build.. But am feeling guilty of replacing a perfectly good, reliable and working PSU that has no problems.. Damn you Seasonic.

July 10, 2017 | 01:37 AM - Posted by HERETIC (not verified)

Well done Seasonic-you set the standards by which
others are measured............

July 14, 2017 | 09:37 AM - Posted by Sandwall (not verified)

The box art is making me hungry for chips.

November 2, 2017 | 11:25 AM - Posted by MNaydenov (not verified)

This PSU seems to be of insane value as it is smaller, better AND cheaper then the Corsiar RM650x!

November 24, 2017 | 09:20 PM - Posted by Mike Wilson (not verified)

"our PSU was delivered straight from inventory." On front page yet last page says "Our thanks to Seasonic for sending us the FOCUS PLUS 650W Gold PSU to review!" Guess they are getting the cherry picked samples.

December 27, 2017 | 06:42 PM - Posted by Rag (not verified)

It ordered by Seasonic from reseller's stock... Good job Sherlock to find out nothing... ;)

April 18, 2018 | 10:32 PM - Posted by Maurice Fortin (not verified)

650RM vs 650FX, 650RM "old model" is better than the "new" 650FX

the old had more available cables such as 4+4 attached for cpu power and an extra 1x8 12v for cpu as well, this way here you did not need buy a higher wattage PSU that you will not need for nothing.

some builds that you may have an extra powerful cpu you may not have need of an extra power gpu, but even than, 450w of power is quite a bit of juice for even a very high end core i7 overclocked as well as pretty much any modern AMD or Nvidia graphics card (single one at least) in an overclocked state, so 54a 12v is plenty really, this saves you from having to buy an adapter for the extra cpu power (which quite a few motherboards are now using)

Seasonic is top quality bar none, but, it seems they took a hit on functionality "upgrading" from the semi-modular 650RM to the full modular 650FX, not quite as much in the 3v or 5v rails as well as a few cable change but also costing on average a little bit more $.

glad I bought the well, the cables that are not modular 99% of the time you will be using them anyways ^.^

April 26, 2018 | 12:33 PM - Posted by FredgHar (not verified)

Hello, do you have maybe cab;e pinout for focus plus series?

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