Final Words

In designing the Strider Platinum series, SilverStone has put together a PSU that can deliver high overall performance and quality while maintaining compact proportions. In fact this is almost to the exclusion of everything else - the company does not seem interested in competing in terms of raw performance, aesthetics, or even value - with an end goal of enticing those builders who require a high performance product but are facing spatial restrictions that rule out some (or most) of the competitive products. For this reason, there are not many 80Plus Platinum certified and modular PSUs with that kind of output, performance and warranty with a chassis that is just 140 mm long.

Despite the relatively small chassis, the Strider Platinum 550W PSU that we have tested exhibited a good balance between thermal performance and acoustics. It remains silent when lightly loaded and operating within typical ambient temperatures, and the cooling system does react well and keeps the unit from overheating when the operating conditions are adverse. Despite the fact that this unit has been rated for operation at 40 °C ambient temperature, it had no problem delivering its maximum power output and maintaining good internal temperature readings under worse conditions.

However unlike the excellent thermal and acoustics performance, the electrical performance of the Strider Platinum is only mediocre for a product of this class. This cannot be attributed to the small size of the chassis, but it may be partially attributed to use of a modified platform that was originally designed for lower class units. That does not mean that the Strider Platinum has poor electrical performance: the power quality is very good and far from the ATX design guide limit, while the efficiency is high. Although the Strider Platinum failed to meet the 80Plus Platinum efficiency under 20% load during our testing, it also showed some of the better <10% load efficiency figures that we have seen over the years. We are simply saying that, considering the class and cost of the PSU, the electrical performance could have been significantly better.

Ultimately what makes in particular the 550W version of the Strider Platinum competitive is not only its small physical proportions, but the lack of severe competition. There are very few 80Plus Platinum certified PSUs with an output lower than 700 Watts, as most manufacturers are focused on improving the efficiency of their >700 Watt models. Some may argue that the benefits of an 80Plus Platinum certified PSU over an 80Plus PSU are indiscernible when comparing PSUs with a maximum output below 700 Watts, and they are limited to just a few Watts, but there is a difference and can have a measurable impact on the thermal performance and longevity of the PSU. This is of particular importance for the kind of applications that SilverStone intends the Strider Platinum for, which will most likely involve small, cramped spaces with limited cooling.

We found the Strider Platinum 550W retailing for $110 and other 80Plus Platinum certified 550W PSU are sharing similar price tags, with the sole exception of the Enhance-made Rosewill Quark 550W that currently retails for $20 less. As such, if a very high efficiency 550W PSU is needed, then SilverStone’s Strider Platinum sits in an interesting niche and will certainly not disappoint. 

Hot Test Results


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  • dreamcat4 - Saturday, April 9, 2016 - link

    Hmm. and apparently "there is a silverstone expo tomorrow". Not sure what that means since was expecting shipping / stock movement instead. But can read more about it all over here --> Reply
  • Sn3akr - Monday, April 11, 2016 - link

    For a HTPC with discrete GFX, this seems like a good idea.. We cut the cable a few years ago and went full streaming, and for our system, that also doubles as our "console" for family entertainment, i'd be intereested in something like this, since our system runs a lot of hours daily.. Reply
  • nagi603 - Monday, April 11, 2016 - link

    My first thought was "Does a 550W platinum PSU even need a fan?", as I'm a happy owner of a couple Seasonic X400's that can go up to 600W load, fanless. Then I noticed the price.
    Note to self: not all platinum modular PSUs are made equal.
  • tonyou - Monday, April 11, 2016 - link

    According to the testing done here, this PSU at room temperature stayed fanless until around 400W so it probably doesn't need a fan most of the time in a cool running rig. That Seasonic X400 may have the hardware to run up to 600W fanless for a while but it probably doesn't meet Platinum efficiency at that power level. Reply
  • AbRASiON - Monday, April 11, 2016 - link

    Can someone explain to me the difference with silver / gold / platinum PSUs?
    Is it simply more energy efficient? Or is it capable of actually outputting more juice or more consistent juice?

    Why not just buy a 700w platinum? If the load requirement is only 300w of components, would a 700w platinum use more power than a 550w platinum?
  • Namisecond - Monday, April 11, 2016 - link

    All power supplies have an efficiency curve with the highest efficiency around half to 3/4 full load. The better PSU manufacturers show you that curve on a graphic. The lowest efficiency will be under 20% load with the efficiency falling further the lower the load (and at the other end of the curve, falling a bit past 75% load).

    Under a 300W load, that 700W platinum PSU would probably use a little more power than that 550W. However, Under a 50 -100W load your gaming rig (idling while you surf the net) there may be a bigger difference in efficiency percentages.
  • cara smith - Friday, May 6, 2016 - link

    I like the way you characterised the features of this product. I hope next month I am going to buy this awesome product. I am taking consideration of it very passionately. By the way Thanks for the review. Reply

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