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SilverStone DA1650-G Power Supply Review

A power factory that won't empty your wallet.

SilverStone DA1650-G
(Image: © Tom's Hardware)

Advanced Transient Response Tests

For details about our transient response testing, please click here.

In the real world, power supplies are always working with loads that change. It's of immense importance, then, for the PSU to keep its rails within the ATX specification's defined ranges. The smaller the deviations, the more stable your PC will be with less stress applied to its components. 

We should note that the ATX spec requires capacitive loading during the transient rests, but in our methodology, we also choose to apply a worst case scenario with no additional capacitance on the rails. 

Advanced Transient Response at 20% – 20ms

VoltageBeforeAfterChangePass/Fail
12V11.993V11.887V0.88%Pass
5V5.005V4.924V1.62%Pass
3.3V3.312V3.204V3.26%Pass
5VSB4.964V4.891V1.47%Pass

Advanced Transient Response at 20% – 10ms

VoltageBeforeAfterChangePass/Fail
12V11.988V11.882V0.88%Pass
5V5.005V4.946V1.18%Pass
3.3V3.313V3.196V3.53%Pass
5VSB4.964V4.915V0.99%Pass

Advanced Transient Response at 20% – 1ms

VoltageBeforeAfterChangePass/Fail
12V11.991V11.879V0.93%Pass
5V5.005V4.934V1.42%Pass
3.3V3.313V3.211V3.08%Pass
5VSB4.965V4.924V0.83%Pass

Advanced Transient Response at 50% – 20ms

VoltageBeforeAfterChangePass/Fail
12V11.973V11.890V0.69%Pass
5V4.994V4.941V1.06%Pass
3.3V3.298V3.174V3.76%Pass
5VSB4.934V4.891V0.87%Pass

Advanced Transient Response at 50% – 10ms

VoltageBeforeAfterChangePass/Fail
12V11.969V11.890V0.66%Pass
5V4.994V4.926V1.36%Pass
3.3V3.298V3.180V3.58%Pass
5VSB4.934V4.877V1.16%Pass

Advanced Transient Response at 50% – 1ms

VoltageBeforeAfterChangePass/Fail
12V11.974V11.896V0.65%Pass
5V4.994V4.937V1.14%Pass
3.3V3.298V3.179V3.61%Pass
5VSB4.934V4.887V0.95%Pass
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(Image credit: Tom's Hardware)

Results 25-29: Transient Response

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The 12V rail's transient response is satisfactory, and the same goes for the 3.3V and 5VSB rails. At 5V, this unit achieved top-notch performance. 

Turn-On Transient Tests

In the next set of tests, we measure the PSU's response in simpler transient load scenarios—during its power-on phase. Ideally, we don't want to see any voltage overshoots or spikes since those put a lot of stress on the DC-DC converters of installed components.

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Turn-On Transient Response Scope Shots

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Very good performance here, with no significant voltage spikes or voltage overshoots. 

Power Supply Timing Tests

There are several signals generated by the power supply, which need to be within specified, by the ATX spec, ranges. If they are not, there can be compatibility issues with other system parts, especially mainboards. From year 2020, the PSU's Power-on time (T1) has to be lower than 150ms and the PWR_OK delay (T3) from 100 to 150ms, to be compatible with the Alternative Sleep Mode.

PSU Timings Table
T1 (Power-on time) & T3 (PWR_OK delay)
LoadT1T3
20%106ms288ms
100%94ms286ms

The PWR_OK delay is out of the 100-150ms region, so the PSU does not support the alternative sleep mode. To modify the platform to support ASM would be cost, so SilverStone chose not to do it. The Power-on time is slightly higher than 100ms during the first test. We would like to see lower than 100ms in both tests. 

Ripple Measurements

Ripple represent the AC fluctuations (periodic) and noise (random) found in the PSU's DC rails. This phenomenon significantly decreases the capacitors' lifespan because it causes them to run hotter. A 10-degree Celsius increase can cut into a cap's useful life by 50%. Ripple also plays an important role in overall system stability, especially when overclocking is involved.

The ripple limits, according to the ATX specification, are 120mV (+12V) and 50mV (5V, 3.3V, and 5VSB).

Test12V5V3.3V5VSBPass/Fail
10% Load8.6 mV10.7 mV15.9 mV4.4 mVPass
20% Load9.4 mV11.5 mV16.5 mV6.3 mVPass
30% Load10.2 mV12.1 mV17.7 mV8.6 mVPass
40% Load11.1 mV10.9 mV15.9 mV8.8 mVPass
50% Load11.3 mV11.7 mV18.4 mV9.7 mVPass
60% Load12.1 mV13.2 mV20.3 mV13.9 mVPass
70% Load14.1 mV16.5 mV20.7 mV13.6 mVPass
80% Load16.7 mV17.6 mV25.4 mV18.5 mVPass
90% Load16.3 mV16.9 mV25.9 mV23.0 mVPass
100% Load22.6 mV17.7 mV32.0 mV21.2 mVPass
110% Load24.8 mV15.9 mV31.6 mV20.4 mVPass
Crossload 112.8 mV12.3 mV20.5 mV4.7 mVPass
Crossload 222.8 mV15.6 mV29.1 mV20.2 mVPass
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Results 30-33: Ripple Suppression

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Ripple suppression is excellent at 12V, which is the most important rail. The 3.3V rail is the worst performer here. Still, it won't create any issues. 

Ripple At Full Load

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Ripple Full Load Scope Shots

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Ripple At 110% Load

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Ripple 110% Load Scope Shots

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Ripple At Cross-Load 1

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Ripple CL1 Load Scope Shots

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Ripple At Cross-Load 2

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Ripple CL2 Load Scope Shots

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EMC Pre-Compliance Testing – Average & Quasi-Peak EMI Detector Results

Electromagnetic Compatibility (EMC) is the ability of a device to operate properly in its environment without disrupting the proper operation of other nearby devices.

Electromagnetic Interference (EMI) stands for the electromagnetic energy a device emits, and it can cause problems in other nearby devices if too high. For example, it can be the cause of increased static noise in your headphones or/and speakers.

(Image credit: Tom's Hardware)

The PSU's EMI filter does a very good job, as you can see in the graph above. 

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MORE: How We Test Power Supplies

MORE: All Power Supply Content

  • Awev
    Just wondering, what is the suggested retail price for this? And by offering only a three year warranty how much does that save a person compared to the competition, if you only plan to use it for say 2 1/2 years when the next generation of AMD (AM5 socket) and Intel CPUs are released, along with new GPUs - all requiring more power? How long would you have to own one or the other before it really pays for itself in warranty vs actual expected life?

    Please let me know if I missed the price in the article somewhere.
    Reply
  • Endymio
    And of course 90% of the buyers will be those with systems drawing half or less of that 1650 watts, but who have convinced themselves they "need" the extra headroom.
    Reply