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SilverStone SFX 650W Gold Power Supply Review

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Manufacturer: SilverStone

Introduction and Features

Introduction

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It has been several years since we looked at a true SFX form factor power supply, but today we are going to take a detailed look at one of SilverStone’s new SFX units, the SX650-G. As one of the original manufacturers of SFX power supplies, Silverstone Technology Co. is meeting demand with new products; continuing to expand their product offering with two new SFX units, the SX500-G and SX650-G.

SX650-G

(SX = SFX Form Factor, 650 = 650W, and G = 80 Plus Gold certified)

SilverStone has a long-standing reputation for providing a full line of high quality enclosures, power supplies, cooling components, and accessories for PC enthusiasts. With a continued focus on smaller physical size and support for small form-factor enthusiasts, SilverStone added the new SX-G power supplies to their SFX form factor series. There are now ten power supplies in SilverStone’s SFX Series, ranging in output capacity from 300W to 800W. Unlike the larger SX-L units which are 30mm (1.2”) longer than a standard SFX chassis, the SX650-G retains the original SFX dimensions.

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(Courtesy of SilverStone)

The new SX650-G power supply features high efficiency (80 Plus Gold certified) and comes with all modular flat ribbon-style cables.

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SilverStone SX650-G PSU Key Features:

•    Small Form Factor (SFX) design
•    650W continuous power output
•    Fluid Dynamic Bearing (FDB) fan for quiet, reliable operation
•    80 Plus Gold certified for high efficiency
•    Powerful single +12V rail with 54.2A capacity
•    All-modular, flat ribbon-style cables
•    High quality construction with all Japanese capacitors
•    Strict ±3% voltage regulation and low AC ripple and noise
•    Support for high-end GPUs with four PCI-E 8/6-pin connectors
•    Safety Protections: OCP, OVP, UVP, SCP, OTP, and OPP

Please continue reading our review of the SilverStone SX650-G PSU!!!

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Here is what SilverStone has to say about their new SX650-G power supply:

After pioneering full featured, high performance SFX power supplies in 2012, SilverStone has continued refining the segment it has created. The SX500-G and SX650-G are yet another evolutionary step toward perfecting the small form factor power supply category. They are more powerful without growing in size to achieve class-leading power density levels of 633W per liter for the SX500-G and 818W per liter for the SX650-G.

This increase in power density was achieved through more advanced engineering and component selection so rather than added noise as is the norm for upping wattage output in power supplies, the SX500-G and SX650-G are quieter than their less powerful predecessors. Their noise signature was further lowered thanks to the use of 92mm fans versus 80mm on previous models.

For connectivity, the SX500-G and SX650-G are equipped with more connectors so they can be used in a wider variety of system configurations. SilverSton’s famed short, flexible flat cables will of course be part of the package as well (a longer standard length cable set, the PP05-L is available for purchase separately). For those looking for the best bang for the buck in high performance SFX power supplies, the SX500-G and SX650-G will not disappoint.”


December 3, 2017 | 11:27 AM - Posted by Smitty (not verified)

Thanks for the review. I'm a customer looking to purchase this SX650 or the Corsair SF600 and I noticed you have reviewed both units. However, there seems to be little direct comparison in your review between the two, even though they are direct competitors.

1) Is the fan in the Silverstone removable without cutting and soldering wires? It doesn't appear so but just looking to confirm.
2) It seems the SX650 runs hotter and louder than the SF600 based on comparing the two tables between reviews. However, this is a test where you are recycling hot air back into the intake. Many cases are designed where the PSU intake is bringing in fresh/cool outside air. Do you think this will affect the temperatures in a different way?

December 3, 2017 | 11:28 AM - Posted by Smitty (not verified)

One additional question:
3) The Corsair cables in the SF600 are often accused of being stiff and difficult to work with. Based on your review the SX650 have similar length and variety of cables. Are they also 'too stiff' or are they more flexible and easier to route?

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