SilverStone SFX SX600-G
Home > Reviews > Power Supply Reviews > Gold Award > SilverStone SFX SX600-G Power Supply Review

SilverStone SFX SX600-G Power Supply Review

February 4th, 2015 Mike Leave a comment Go to comments



Late last year I was lucky enough to be sent a rather unusual PC case from SilverStone. That being the rather brilliant SilverStone Raven RZV01. Being an MITX case meant we had to obviously source an MITX motherboard, due to the RZV01’s incredibly slim nature (it was only 105mm wide), we couldn’t use our regular Raijintek Themis CPU cooler, so we swapped it out for the tiny SilverStone Argon AR06, but we also had the sudden issue (and panic!) of our regular Corsair Professional Series AX 760i not being suitable for the unique RZV01 build either…

Yet as luck would have it, Silverstone also happen to produce a rather nifty little Power Supply that fitted the bill perfectly, which they promptly sent out for us so we could crack on with the job in hand. So here we have the SilverStone SFX SX600-G. At 600W, this 80 PLUS Gold rated Power Supply is one of the most powerful SFX Power Supplies currently available and rather small, measuring in at a minuscule 125mm(W) x 63.5mm(H) x 100mm(D).

Can something so small really give us the performance we desire for a modern day Gaming rig? Let’s find out!


silverstone logo ‘After releasing the breakthrough SFX Power Supply in 2012 with the ST45SF-G, SilverStone has pushed the technical envelope even further with yet another industry defining design in the SX600-G. This small form factor PSU has the exact same dimensions as its predecessor but its power density has increased from 567W per liter (in the ST45SF-G) to 756W per liter. The result is a standard-sized SFX PSU with an incredible 600W of continuous power, a level that is capable of supporting any single graphics card system with ease.’


SilverStone SFX SX600-G - box front SilverStone SFX SX600-G - box back


The SilverStone SFX SX600-G arrived at pcG in a tiny box (so tiny in fact, I wasn’t even convinced it housed a Power Supply at all!). The box itself being predominately black, features bold flame like imagery in the background, an angled image of the PSU itself, as well as the SilverStone logo. It then goes on to tell us the SilverStone SFX SX600-G is 80 PLUS Gold certified, the model name, series and wattage, company web address and the fact that it has the following features:

  • Intelligent semi-fanless operation
  • Support standard SFX form factor and ATX via included bracket
  • High efficiency with 80 PLUS Gold certification
  • 100% modular cables
  • All cables made with flexible flat arrays
  • 600W continuous power output at 40℃ operating temperature rated for 24/7 operation
  • Class-leading single +12V rail with 50A
  • Strict ±3% voltage regulation and low ripple & noise
  • Support dual PCI-E 8/6pin connectors
  • Active PFC

Flipping the box over gives us the same features in nine other languages and also features six pictograms giving us finer details on the PSU features and goes a little way into explaining what the 80 PLUS Gold rating is.


SilverStone SFX SX600-G - box left SilverStone SFX SX600-G - box top SilverStone SFX SX600-G - box right


On the left side of the box, we have the SilverStone SFX SX600-G specifications (see Specifications/Features below), along with similar imagery as on the front.

The top and bottom of the box are identical and follow the same styling as the front. Neither side gives us any new information, but they still look pretty cool anyway.

Then on the right we have six images of the SilverStone SFX SX600-G power cable ends and quantities.


SilverStone SFX SX600-G - unboxing


Popping open the box reveals the SilverStone SFX SX600-G to be rather simply protected. The PSU being wrapped in a small bubble-wrap envelope and its power cables within a clear plastic bag. This may seem a little inadequate for a Power Supply, but the SX600-G is very small and light, so it is perfectly adequate.


SilverStone SFX SX600-G - contents


  • SilverStone SFX SX600-G Power Supply
  • Power Cables
  • European Mains Power Cable
  • ATX Mounting Bracket
  • Fittings
  • Installation Guide
  • Specifications and Features Guide

As is becoming more and more common these days, the SFX SX600-G does not feature a 3-pin mains power cable for us guys in the UK (this is something of an irritant to me, as despite having several scattered across the office, I can typically never find one when I need one!).

At the time of review the SilverStone SFX SX600-G is available for £104.99 from OverclockersUK or £155.09 on Amazon, whilst offering a generous 3 year warranty.



courtesy of SilverStone

SilverStone SFX SX600-G - specifications

* Additional details available here


First Impressions


SilverStone SFX SX600-G - top SilverStone SFX SX600-G - bottom


Wow… That’s all I can say really (great way to start my first impressions isn’t it?!). The SilverStone SFX SX600-G is tiny! Measuring in at 125mm(W) x 63.5mm(H) x 100mm(D) and weighing just 1.45kg, I can honestly say I don’t believe I’ve ever seen a smaller PC Power Supply. The SFX SX600-G may be incredibly compact, but also very solidly build without any flexing on the casing. The PSU has a satin black lead-free paint over its entirety. The top of which features the SilverStone name and logo, embossed diagonally across its fascia.

The bottom of the PSU has serial number, version number, guarantee void if removed and factory check stickers. Not hugely exciting, but we also have the PSU fan of course. This is an 80mm silent fan which will only activate when the SilverStone SFX SX600-G internals reach 45.00C, courtesy of the SilverStone ZERO RPM Intelligent semi-fanless operation technology.

SilverStone SFX SX600-G - left SilverStone SFX SX600-G - right


On the left we have the PSU specifications sticker. This tells us the load ratings, model name and type, wattage and also features the 80 PLUS Gold certification.

On the right we can see absolutely nothing at all as this side is entirely featureless. Although it does show off the black powder coating…

SilverStone SFX SX600-G - back SilverStone SFX SX600-G - front


The back of the SilverStone SFX SX600-G is also pretty sparse. Whilst almost entirely dominated by a honeycomb mesh, it does have a 3-pin power socket (handy that! 😉 ), but no power switch. Why? I can’t answer that I’m afraid, perhaps the switch inner components are far bigger than we can imagine!?

The front end of the SFX SX600-G is where all the ATX power lead sockets live. It may seem a little light on sockets, but it’s certainly enough to cover your basic needs. At the top we have the socket for the 24-pin motherboard power lead, beneath which is the 8-pin CPU and two 6-pin SATA & IDE sockets, then to the right a bright blue 8-pin PCIe power socket.

SilverStone SFS SX600-G - cables

The SilverStone SFX SX600-G is a fully modular Power Supply and as such, needs power cables to fix to its sockets (not too obvious, I know). The included cables are of the flat variety and entirely black, whilst also very flexible. We have a total of five cables altogether, which are 20+4pin MB, 4+4pin CPU, 6+2×2 PCIe, 4x SATA and 2x peripheral + 1x Floppy power cable (being flexible they pretty much all are! 😉 ).

Overall the SilverStone SFX SX600-G may not seem too hugely exciting from the outside, but in this case it isn’t all about aesthetics, but size and power. The last Power Supply I reviewed here at pcG, was the brilliant Super Flower Leadex Gold 650W, which is a big ATX PSU measuring in at 200mm(L) x 150mm(W) x 86mm(H), compare that to the 125mm(W) x 63.5mm(H) x 100mm(D) of the SilverStone SFX SX600-G and suddenly your in an entirely different ballpark. All of the cables feel of a high quality, are flexible, with the additional flexibility and benefit of being a flat.


Cable Details


SilverStone SFS SX600-G - cable details


Hardware Installation


  • Test Rig Setup

  • Case Cooler Master HAF XB Power Supply SilverStone SFX SX600-G
    Motherboard ASRock Fatal1ty Z97X Killer CPU Intel Core i5-4690K
    CPU Cooler Raijintek Themis RAM HyperX Savage 2400MHz 8GB Kit
    Graphics Card XFX AMD Radeon R9 290X DD Black Edition SSD HyperX FURY 120GB


    SilverStone SFX SX600-G - comparison side SilverStone SFX SX600-G - comparison bottom SilverStone SFX SX600-G - comparison front


    Installation of a Power Supply is usually a straightforward and simple affair, but installing the SilverStone SFX SX600-G into our HAF XB Test Rig case proved rather unusual. This was entirely because of its compact nature of course (just check out the above size comparison images). Not only is the SFX SX600-G shorter in length, but also width and height! Luckily SilverStone include an additional mounting plate to allow for this. So the plate is mounted onto the PSU, which is then fitted to the mounting bracket of the HAF XB, which is then mounted into the case itself (that’s a whole lotta mounting!). Once installed all of the SFX SX600-G cables are then plugged into the PSU (in this case we’ll be using all of them), the rest of the Test Rig is then pieced together and the cable end attached. Nice and easy, but it certainly looks a little odd when set in place because of its size.


    SilverStone SFX SX600-G - installed SilverStone SFX SX600-G - installed cables


    Although there was one small issue… The SilverStone SFX SX600-G is an SFX Power Supply, therefore it features SFX power cables, which also means the 24-pin motherboard and 6+2×2 PCIe cables are pretty tight when plugged in. Given the SFX SX600-G’s target audience this shouldn’t be a problem, but it is something you’ll need to be aware of if your looking for a Power Supply flexible enough for various builds.


    SilverStone SFX SX600-G - installed rear SilverStone SFX SX600-G - installed side SilverStone SFX SX600-G - installed front


    Once installed it doesn’t look bad at all. In fact if anything the shorter SFX power cables help to make for a tidier looking build due to lack of excess cables. Now let’s see how it performs…


    Testing Methodology/Setup


    When it comes to testing Power Supplies there’s very little else you can do other than put the PSU under load and measure the voltages. As this is not a very real world test (as it only takes seconds to setup and record), we have employed a more real world test. For more details on our thoughts regarding Power supply testing check out this article.

    The Power Supply is put under a real world load for 1 hour, while running both Unigine Heaven and running Prime 95 (Blend) simultaneously. Power Supplies over 750W are tested using x2 AMD Radeon 290Xs to ensure the PSU gets a real workout. The SilverStone SFX SX600-G we have for review is of course a 600W PSU, which means two R9 290Xs in CrossFireX isn’t going to work, so I’ll be using just the one.


    Hardware Performance


    SilverStone SFS SX600-G - benchmarks


    As you can see from the above image, the SilverStone SFX SX600-G Power Supply did well in our burn-in test, with all voltages (12v, 5v & 3.3V) remaining stable at (11.904v, 4.992v & 3.296v) and well within the ATX guidelines which allow for a 5% fluctuation. Throughout testing and during the week long test period no signs of instability were encountered.


    SilverStone SFX SX600-G - power consumption The maximum power draw (at the wall) during testing was recorded at 383.1 watts, suggesting that this Gold Power Supply was delivering approximately 345 watts to the system due to its 90% efficiency at a 57.5% load.

    For more information regarding Power supply testing and the 80 Plus Efficiency rating check out this article.


    Final Thoughts


    I’ve lived with the SilverStone SFX SX600-G Power Supply for a few weeks now and if I’m honest, I’m still in shock… Why? Well…

    Once the SilverStone SFX SX600-G arrived at pcG in a graphically bold and highly stylised box, which is is so small, you’d be forgiven for thinking it not to be a Power Supply at all. Lifting the box lid revealed the PSU to be adequately protected within a bubble wrap envelope, whilst the rest of the box contents wedged it in well enough to prevent any movement.

    To look at the SilverStone SFX SX600-G is certainly nothing to shout about as it is essentially a small black box with an embossed SilverStone logo on the top, but this particular PSU is not about aesthetics, but form. The SFX SX600-G is the most compact Power Supply I’ve ever seen, measuring in at 125mm(W) x 63.5mm(H) x 100mm(D) and weighing a modest 1.45kg (the thing literally just sits in the palm of your hand!). It features enough power cables for any single graphics card build, all of which are are very flexible, flat and the wires themselves feature all black sleeving.

    Installing the SFX SX600-G proved nice and easy within our HAF XB test case, using the included mounting plate to allow compatibility with the ATX case, while the power cables proved to be long enough (just!) for the relevant power sockets scattered around the rig. It did look very odd though, due to its tiny footprint.

    In the all important area of performance, the SilverStone SFX SX600-G ran without a fault throughout day to day use and sailed through our one hour burn-in test with healthy main rails (3.3v, 5v, & 12v). It even did so very quietly due to its 80mm silent fan and SilverStone ZERO RPM-Intelligent Semi Fanless Operation Technology.

    The key feature of the SilverStone SFX SX600-G is most certainly its size. It may be slightly more expensive than its larger ATX siblings, but it does take up a lot less space, allowing it to boldly go where no full sized ATX PSU has gone before (like in the SilverStone Raven RZV01). Given its unique nature, the SilverStone SFX SX600-G seems to be priced fairly appropriately with prices ranging from approximately £105.00 to £155.00, it is certainly worth shopping around for this miniature dynamo.



    Please Share, Like & Comment below, we really value your thoughts and opinions…

    Where possible we always use Amazon’s price for Value…

    Design/Quality pcGameware awards the SilverStone SFX SX600-G a Gold

    Many thanks to SilverStone for providing this sample for review


    1. No comments yet.