Silverstone Strider 750w ST75F PSU
Testing
Published: 20th October 2006 | Source: Silverstone | Price: |
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 ST75F's rails:
+3.3v - 20a Load
+5.0v - 20a Load
+12v1 - 10a Load
+12v2 - 10a Load
+12v3 - 10a Load
+12v4 - 10a Load
The results are collected from a Mastech MAS-345 Multimeter which logs its readings via RS232 to a PC.
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 ST75F's rails:
+3.3v - 20a Load
+5.0v - 20a Load
+12v1 - 10a Load
+12v2 - 10a Load
+12v3 - 10a Load
+12v4 - 10a Load
The results are collected from a Mastech MAS-345 Multimeter which logs its readings via RS232 to a PC.
The ST75F showed excellent results on both the +3.3v and 5v rails keeping fluctuation to under 0.02v. This is a massive improvement over the ST60F, which suffered a significant voltage droop of 0.29v on its +5v rail.
Continuing the trend, the ST75F shows excellent voltage regulation on the +12v rails, this time managing to keep fluctuation at or below 0.06v.
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.
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.
The Strider ST75F was placed under a load of 646 watts. This counts for a total of 86% of the power supplies rated output. At this load, the power supply required 798 watts from the mains to produce the 646 watts required by our custom made power supply tester. Therefore the efficiency of this power supply can be found by a simple equation: (646 / 798) * 100, which works out to be an efficiency rating of 80.9%.
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
As previously mentioned, the ST75F utilises exactly the same fan as the ST60F and as a result my opinion of the noise levels has not changed. The results from the ST60F review can be found here.
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
As previously mentioned, the ST75F utilises exactly the same fan as the ST60F and as a result my opinion of the noise levels has not changed. The results from the ST60F review can be found here.
Most Recent Comments
Ah great, more power, sexy looks and modular cabling to boot 
I love my ST60F, but if one of these bad boys had been around when I was about to purchase...I would have spent the extra moolah. Great review as usual Jim, well done 
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I love my ST60F, but if one of these bad boys had been around when I was about to purchase...I would have spent the extra moolah. Great review as usual Jim, well done Quotenother great psu review reps to the mod!Quote
Awesome review jim!Quote
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