The power supply is in this test compared to OCZ GameXstrem and Powerstream. Idle voltages were taken while running windows, full load voltages while running loops of SuperPi.
3,3V Testing:
In this test we were able to see that this PSU“s 3.3V rail is quite stable, running at 3.32V at both idle and full load is very good.
5V Testing:
Our 5V results have the same results as the 3.3V as the 5V is also rock stable at 5.05V at both load and idle usage.
12V Testing:
The 12V rail had some minor voltage flicker as it had some trouble deciding to either stay at 12.26V or 12.25V. After wathcing the voltage for around 30 min we were able to see that the 12.26V is the final stable voltage we were able to measure.
Conclusion:
This is a good power supply there is no doubt about it. I am getting a tool that will tell us in the future how much electricity the power supply uses so look forward to that :)
We got stable rails and a very quiet fan on this PSU, I'm really glad I got a chance to try it out and the two 12V rails are able to get the test rig running without any problems.
I got what I expected from a Silverstone PSU, stability and performance topped with some quiet operations can you ask for anything more?
The ST40EF has the 80Plus certification, this means, that efficiency is greater than 80% at all load (20%, 50%, 100%). I have got an update also on the price which is around 69$ USD which is a very low price for this PSU.
Pros:
+ Quiet
+ Stable rails
+ Well packed
+ All necessary connectors included
+ 24 to 20 pin adapter
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