Silverstone Strider 850w ST85F PSU

Results

Load Testing

In order for the results from all current and future PSU reviews to remain fair and comparable, Overclock3D uses a custom built Power Supply load stress tester. The tester will be placing the following loads on each of the Strider's rails:

  Idle Load
+3.3v Rail
10a20a
+5.0v Rail
10a20a
+12v1 Rail
5a20a
+12v2 Rail5a20a

As some power supplies produce obscure voltage outputs when running with 0% load, the Idle testing simulation will be produced by placing each rail under a small load similar to what would be expected from a mid-range PC. Load testing results are obtained by placing the unit under the maximum load selectable on the OC3D equipment without tripping the OLP (Over Load Protection) on the power supply.

Silverstone ST85F 3.3v Rail Silverstone ST85F +5v Rail

Silverstone ST85F +12v1 Rail Silverstone ST85F +12v2 Rail

All rails on the ST85F remained well within ATX specifications when placed under full load, with the most fluctuation being exibited on the +5v rail. Comparing the results of the ST85F against the ST75F we can actually see that the ST75F suffered less (over half) as much fluctuation on the +12v rails. This could well be due to the ST75F having quad +12v rails, but never less it would have been nice to see the ST85F performing on-par with its predecessor.


Efficiency Testing

Efficiency tests are performed by measuring the wattage consumed by the power supply at the mains against the power (in watts) consumed by the OC3D power supply stress tester. These results may not be 100% accurate, but have proven to be extremely close to results obtained from professional equipment.

Silverstone ST85F Efficiency Silverstone ST85F Efficiency

At idle the ST85F was placed under a total load of 203 watts with a recording of 249 watts consumption being obtained from the mains. Therefore the efficiency of the ST85F at idle worked out to be 81.5%.

Increasing the load on the unit produced even more favourable results, with the ST85F managing 83.4% efficiency when being placed under a total load of 646 watts.


Noise Testing

Possibly the hardest part of any PSU review is summarising the level of noise given out by the unit. The threshold for what is considered 'noisy' varies from person to person and therefore what I may consider a quiet unit, another person may consider extremely loud. A common way to resolve this issue is to use a dBA meter to measure the units noise level, however this doesn't take into account the pitch (type) of noise emitted and whether it is likely to irritate end users.

For this reason OC3D records all power supplies at idle and load in wav format for you to make your own informed decisions. All recordings are taken at 30cm away from the PSU and outside of a PC case. You will need to remember that noise levels will be reduced by varying amounts once the PSU has been installed inside your PC enclosure.

Idle Recording - Download
Load Recording - Download

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Most Recent Comments

30-01-2007, 08:42:50

JN
"Just over 3 months ago we had the oportunity to review Silverstone's upgraded 750w model of their original 600w Strider PSU. Today we're back again to see what their latest 850w model has to offer."

Linky

30-01-2007, 09:16:22

Toxcity
Looks pretty good!

Not the best PSU I have ever seen but none the less pretty intresting to compare with others around.

Once again another Awesome reveiw from OC3D!

30-01-2007, 09:38:43

ai_01
one thing i love about the silverstone psu is the sleeving, always impressed by it and i wish other companies would do it just like theirs.

30-01-2007, 12:28:46

markkleb
I like the idea of having the 8pin cables(for future GPUs) But I am kind of sad that they dont aim higher.

I think in the 800Watt and higher market the PSs should cater to "Enthusiast" not the penny pincher bookeepers that seem to run the companies.

The PS 510 I just got has external adjustable pots for voltages. I think they should go 1 step further and add a digital gauge to it.

When I think of Silverstone I think "High End" its a shame they dont feel the same way.
Reply
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