SilverStone Strider Platinum 1000W & 1200W - Hot Test Results

Enhance is an OEM who does not get concerned with power quality when the figures are good enough and these two units are no exception. The voltage ripple figures are mediocre, with the 3.3V/5V voltage lines flirting with the 50 mV recommended design limit. 

SilverStone ST1000-PT Main Output
Load (Watts) 202.7 W 505.92 W 752.48 W 997.17 W
Load (Percent) 20.27% 50.59% 75.25% 99.72%
  Amperes Volts Amperes Volts Amperes Volts Amperes Volts
3.3 V 2.29 3.36 5.72 3.36 8.58 3.33 11.44 3.32
5 V 2.01 5.06 5.04 5.06 7.55 5 10.07 5
12 V 15.2 12.16 37.99 12.14 56.99 12.04 75.99 11.96
Line Regulation
(20% to 100% load)
Voltage Ripple (mV)
20% Load 50% Load 75% Load 100% Load CL1
12V
CL2
3.3V + 5V
3.3V 1.2% 16 30 36 48 20 42
5V 1.2% 20 24 30 44 20 40
12V 1.6% 18 26 40 56 54 36

The 12V lines hold better, with the ST1000-PT and the ST1200-PT reaching up to 56 mV and 50 mV at maximum load respectively, which is half of the 120 mV recommended design limit but still considerably higher than what the competition nowadays offers. Voltage regulation is good and similar for both units, at about 1% for the 3.3V/5V lines and 1.6% for the 12V line across the nominal load range.

SilverStone ST1200-PT - Main Output
Load (Watts) 243.59 W 608.13 W 902.73 W 1197.78 W
Load (Percent) 20.3% 50.68% 75.23% 99.82%
  Amperes Volts Amperes Volts Amperes Volts Amperes Volts
3.3 V 2.31 3.35 5.79 3.34 8.68 3.33 11.57 3.32
5 V 2.04 5.1 5.09 5.09 7.64 5.05 10.18 5.04
12 V 18.51 12.18 46.29 12.16 69.43 12.03 92.57 11.97
Line Regulation
(20% to 100% load)
Voltage Ripple (mV)
20% Load 50% Load 75% Load 100% Load CL1
12V
CL2
3.3V + 5V
3.3V 1.1% 16 28 36 44 20 38
5V 1.15% 18 20 30 42 20 44
12V 1.7% 16 22 34 50 50 38

 

High ambient temperatures have a small but measurable effect on the energy conversion efficiency of the Strider Platinum units. The average conversion efficiency of the two units drops by about 0.6%, to 91.4% and 91.6% for the ST1000-PT and the ST1200-PT respectively, which is very good considering the very large difference in ambient temperature. This hints that the components that the manufacturer is using are capable of maintaining high performance at higher temperatures and/or significantly oversized for their tasks.

Regardless of the high ambient temperature, both units disabled their fans when the load was very low but would immediately speed up their fans when the load increased above just 100 Watts. The two units were not really louder compared to our room temperature tests, meaning that they were already running their fans at maximum speed before, even though the internal temperatures were much lower than the >80°C figures we get inside our hotbox.

SilverStone Strider Platinum 1000W & 1200W - Cold Test Results Final Words & Conclusion
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  • Samus - Saturday, May 5, 2018 - link

    I'm still rocking an 11 year old PCP&C 750 Quad. 80 Plus something or other rating. I think it was rated 80 Plus before there were even sub-categories of 80 Plus. Reply
  • notashill - Tuesday, May 8, 2018 - link

    I had the same PSU but it died (for the second time, first was under warranty and it was repaired not replaced) about a year and a half ago. Still not a bad service life. Reply
  • DanNeely - Tuesday, May 8, 2018 - link

    That was a very good supply in its day, and is probably fine to keep using in whatever you've got it in for as long as you keep it. I'd be hesitant to install it in a new built system today though.

    I can't find any reviews that did a cross load test on it; but from its age it's almost certainly a design with separate 12V and 3.3/5V segments whose voltages get out of spec if you put a huge load one of them and barely anything on the second (aka cross load).

    That's an issue because modern systems use 12V almost exclusively and put very little load on the 3.3/5V rail (PCIe cards can draw up to 10W@3.3V, a few years ago AMD was to get the most power out of the slot, nvidia was limiting itself to the 65W available at 12V; USB draws 5V for most uses, 2.5/3.5" drives might tap 5V, but almost never touch the 3.3V line because of molex to sata adapters that leave it unpowered); which puts older PSUs into a cross load situation if you're running GPUs and load the 12V rail heavily. Newer designs avoided this by going pure 12V at the AC-DC conversion step and then making lower voltages via DC-DC conversion.
    Reply
  • Achaios - Friday, May 4, 2018 - link

    "considering that the ST1000-PT was struggling to reach the 80Plus Platinum certification limits"

    @E.F: You should know, since you are a PSU specialist, that Silverstone has got a history of marketing units made by Enhance, which fail to meet the Certification limits or barely make it.

    Case in point, my own Silverstone Strider Gold 850W. This unit fails to meet the Gold Certification by 1-2 %. This is a year 2011 PSU and the reviewer who first noted the fact was Johnny Guru.

    After, what, 7 years Silverstone learned nothing from the negative publicity and they just keep doing the same thing. Ofc such data does not concern the average buyer out there who buy PSU's b/c of attractive packaging or good price, just us enthusiasts.

    Silverstone sells good, solid units, just not without flaws and not the best-of-the-best. I'd label them Tier 2 or Tier 3.
    Reply
  • stanleyipkiss - Friday, May 4, 2018 - link

    Who is Tier 1 then? Reply
  • praeses - Friday, May 4, 2018 - link

    Seasonic Reply
  • praeses - Friday, May 4, 2018 - link

    ... and probably FSP Group after them. Reply
  • Fallen Kell - Friday, May 4, 2018 - link

    Tier 1 is Seasonic, FSP, Corsair, and Enermax who design (and in the case of Enermax build) their own power supplies. Many of the other ones simply use an OEM design, possibly with a few modifications, but in many cases it is simply an OEM with specific paint/color scheme, or specific cables, etc.. Reply
  • praeses - Friday, May 4, 2018 - link

    Corsair is usually Seasonic or FSP. I'm not sure that I would put Enermax in the same tier as Seasonic/FSP. Reply
  • piroroadkill - Monday, May 7, 2018 - link

    As far as I recall, Corsair uses Great Wall for a good number of their mid-range units, and Flextronics at the very high end. Reply

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