Silverstone Zeus 750w ST75ZF Quad Rail PSU

Testing

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 is capable of placing loads on the following rails:

+3.3v - 20a Load
+5.0v - 20a Load
+12v1 - 10a Load
+12v2 - 10a Load
+12v3 - 10a Load
+12v4 - 10a Load
(or 40a on a single +12v rail)

The results are collected from a Mastech MAS-345 Multimeter which logs its readings via RS232 to a PC.

+3.3v Rail +5v Rail

Good results from both the +3.3v and +5v rails here. Neither dropped by any significant amount and both remained well within ATX specifications. These results should make those who enjoy pumping lots of voltage through their RAM very happy, as major drops in voltage on these rails (dependant on motherboard used) can cause serious RAM stability issues.

+12v1 Rail +12v2 Rail

+12v3 Rail +12v4 Rail

I was nothing short of stunned by the results from the +12v rails. So much so that I actually tested my equipment on another Power Supply to ensure it was working correctly.

None of the 4 rails dropped below 12.00v and most only experienced a drop of 0.02v with a 10a load applied to each of the rails - that is simply AMAZING.

Silverstone have clearly spent a lot of time and effort ensuring that the Zeus is of the highest quality, and in my opinion, this places the unit directly in fierce competition with the likes of PCP&C and Zippy.


Noise Testing

At present Overclock3D doesn't have the correct equipment to reproduce accurate stats on the dBA output, so for the moment you will have to rely on my ear :)

The Zeus is not a quiet Power Supply - I will say that now. From what I could tell the installed fan appears to run at 100% even when idle. As stated on the previous pages, the Zeus uses a Sanyo Denki San Cooler 80mm fan that pushes 42cfm at 34dBA.

Having listened to various fans, I would say that the noise output is closer to 30dBA. The installed fan does not make any mechanical or high pitched noises, just the noise of air turbulence which is to be expected.

Check back on this review at a later date for professional noise level testing results.
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Most Recent Comments

12-05-2006, 03:32:23

JN
Want a beast on a budget? I think Silverstone may have exactly what you are looking for...

Review HereQuote

12-05-2006, 03:53:40

JN
Review authorised and now live Quote

12-05-2006, 04:09:03

FarFarAway
Nice Jim. Looks like a real beast of a PSU Quote
Reply
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