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Fractal Design Ion SFX 650G 80 PLUS Gold Certified 650W Full Modular SFX-L Power Supply with UltraFlex Cables

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  • New UltraFlex cables that twist and bend to fit your installation
  • 80 PLUS Gold Efficiency for optimized performance and reduced heat
  • Semi-passive mode guarantees silent operation under lighter loads
  • Great electrical output quality, with tight voltage regulation and low ripple
  • Fully modular design for reduced clutter and maximum ease of installation
  • Premium Japanese 105° C capacitors provide maximum reliability and durability
  • 10 year warranty and a full electrical protection suite for peace of mind
  • Comes with SFX-to-ATX mounting bracket

  • Overview
  • Specs
  • Warranty & Returns
  • Reviews
Fractal logo
The Ion SFX Gold side view and some cables

The Ion SFX Gold is a high-performance fully modular PSU with enhanced cable flexibility and superior output quality.

The semi-passive Zero RPM mode maintains total silence under light loads, and the custom-tailored 120mm fan with FDB bearings ensures discrete operation even under heavy use. Revolutionary UltraFlex™ cables with ultra-high strand count wire and special insulation bend and twist effortlessly to make installation and cable-routing a breeze.

All Ion SFX Gold power supplies are 80 PLUS® Gold Certified and backed with a 10-year warranty and full electrical protection suite for your peace of mind.

Features icon
The Ion SFX Gold internal cable close-up


New UltraFlex DC wires twist and bend to fit your build—not fight it.

The Ion SFX Gold fan close-up


120mm slim FDB bearing fan minimizes noise and maximizes lifespan.

The Ion SFX Gold side view and 80 plus gold icon


High-efficiency performance wastes less energy and reduces heat generation.


Experience pure silence under lighter loads.

The Ion SFX Gold RPM graph
The Ion SFX Gold internal structure display


Quality components consistently deliver tight voltage regulation with low ripple and noise.

The Ion SFX Gold ports close-up


Reduced clutter results in a clean and simple installation.

The Ion SFX Gold has Japanese CAPACITORS close-up


Premium Japanese 105°C capacitors provide superior reliability and durability.

The Ion SFX Gold top view and side view and 10 year warranty icon


Extensive 10-year warranty and a full electrical protection suite provides peace of mind.

What's included icon
The Ion SFX Gold font view and fan close-up The Ion SFX Gold cables close-up The Ion SFX Gold cable specifications graph

Learn more about the Fractal Design FD-PSU-ION-SFX-650G-BK

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details
  • Return Policies
    • Return for refund within: Non-refundable
    • Return for replacement within: 30 days
  • This item is covered by's Replacement Only Return Policy.
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Fits Fractal Design Nano S, barely. 8/5/2020 9:03:59 AM

Pros: Super Small, Gold+, High Wattage, super bendy cables!

Cons: The cable's EXACTLY fit the case. Seriously if they were 5mm shorter they wouldn't reach. I had to find the perfect way to route them through the back. I almost ended up running the CPU cable on the mobo side since I have the solid side panel. (I probably should of). The Nano S is a big case for an ITX case. Just beware of the short (but amazing) cables. They are made for ITX cases.

Overall Review: Works great for ITX case! Would recommend and buy again!

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Ownership: 1 week to 1 month
Verified Owner
5/ 5
Better than I hooed 7/25/2020 11:46:49 AM

Pros: Amazing ultra flex cables, will be hard to work with anything else now.
Fan is inaudible and rarely comes on with a 5700xt and overclocked 3900x.
12 yr warranty wow

Overall Review: Would buy again for sure.

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Ownership: 1 week to 1 month
Verified Owner
5/ 5
compact yet powerful 7/15/2020 2:18:14 PM

Pros: made of quality components
will fit inside of a Mini ATX case
Fully modular allows for easy connections

Cons: None that I can detect at the moment

Overall Review: I would recommend this product to anyone building a PC

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Ownership: 1 week to 1 month
Verified Owner
5/ 5
Better than expected 7/14/2020 3:39:00 PM

Pros: Cables are very flexible, 3 reusable cable ties are included
ATX adapter centers the PSU on the bracket, can run cable behind it in some cases.. brilliant
I guess the fan works? It has never turned on from what I can tell
Looks great.

Cons: nothing

Overall Review: I have this in a Cougar QBX. IMO this is the perfect PSU for that case. All cables can be routed behind the PSU if intake is faced inwards. Cable lengths also seem to be just right for that case as well.

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Ownership: 1 week to 1 month
Verified Owner
5/ 5
Awesome compact PSU 5/28/2020 9:54:16 PM

Pros: Compact size
Large Silent mode fan
Flexible cables
Super Efficient

Cons: None

Overall Review: Highly recommended for a compact build. Fit perfectly in my Lian Li TU150 with a big ole NH-D15

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