SilverStone SX800-LTI PSU Review

Ripple Measurements

To learn how we measure ripple, please click here.

The following table includes ripple levels measured on the SX800-LTI's rails. The limits, according to the ATX specification, are 120mV (+12V) and 50mV (5V, 3.3V and 5VSB).

Test12V5V3.3V5VSBPass/Fail
10% Load26.5mV14.3mV22.7mV11.8mVPass
20% Load15.1mV15.6mV23.6mV12.7mVPass
30% Load17.8mV20.7mV28.0mV18.8mVPass
40% Load15.9mV20.6mV29.7mV16.5mVPass
50% Load18.2mV23.3mV32.0mV19.9mVPass
60% Load18.5mV28.1mV33.2mV21.1mVPass
70% Load24.4mV31.8mV37.8mV26.1mVPass
80% Load21.4mV33.2mV37.3mV23.7mVPass
90% Load27.3mV43.0mV43.2mV31.0mVPass
100% Load31.1mV43.8mV44.8mV36.4mVPass
110% Load31.8mV47.6mV55.1mV39.6mVFail
Cross-Load 120.8mV12.6mV21.0mV11.5mVPass
Cross-Load 230.4mV40.0mV43.1mV31.3mVPass

Ripple suppression at +12V is good, but we can't say the same for the minor rails where ripple approaches the ATX spec's upper limits.

Ripple Oscilloscope Screenshots

The following oscilloscope screenshots illustrate the AC ripple and noise registered on the main rails (+12V, 5V, 3.3V, and 5VSB). The bigger the fluctuations on the screen, the bigger the ripple/noise. We set 0.01 V/Div (each vertical division/box equals 0.01V) as the standard for all measurements.

Ripple At Full Load

Ripple At 110-Percent Load

Ripple At Cross-Load 1

Ripple At Cross-Load 2

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  • shrapnel_indie
    I know a guy that used to work for SLM at one time in his life. On one of the products for the company brands owned, he could mod it (it was a musical instrument amplifier) for just a couple of pennies and could have saved the company large sums of money on warranty work and improve reliability. He proposed the change, and it was denied because it broke the price-point, and warranties would cover any issues anyway.

    When bean-counters run the show, products will suffer, just so the price-point isn't exceeded and (now days particularly, immediate) profits are maximized. Makes me wonder if Silverstone listened to their bean-counters a little too much.
    0
  • Aris_Mp
    The thing I appreciate in SilverStone is that they didn't follow the marketing war in the warranty periods. For me it is really weird to see 10-12 years warranty in PSUs. Now with the mining craziness many companies are trying to find ways to get out of this.
    0
  • seanwilson5274
    why did an ad leading to this article popped up automatically on my windows 10 screen? I don't like being spammed, and even less so, when it comes in as sneaky as this.
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  • derekullo
    It is Tom's way of encouraging you to block ads.

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  • SilverStone Guy
    Anonymous said:
    When bean-counters run the show, products will suffer, just so the price-point isn't exceeded and (now days particularly, immediate) profits are maximized. Makes me wonder if Silverstone listened to their bean-counters a little too much.


    If bean-counters had their way, a PSU like this would have never been released in the first place! It's a very niche product that will not sell in significant quantities. Implementing sleeve bearing fan was not a cost-cutting move, it was out of necessity to keep the PSU noise low for the intended applications. At the time of development, FDB version of this fan was not yet available to us.
    0