Most of our readers are probably not familiar with the company Silver Power, which is no surprise considering that this is a new brand name primarily targeting the European market. However, the parent company of Silver Power is anything but new and has been manufacturing a variety of power supplies for many years. MaxPoint is headquartered in Hamburg Germany and they have ties to several other brands of power supplies, the most notable being Tagan.

The Tagan brand was established to focus more on the high-end gamers and enthusiasts, where quality is the primary concern and price isn't necessarily a limiting factor. Silver Power takes a slightly different route, expanding the product portfolio into the more cost-conscious markets. Having diverse product lines that target different market segments is often beneficial for a company, though of course the real question is whether or not Silver Power can deliver good quality for a reduced price.

We were sent their latest model, the SP-600 A2C "Blue Lightning" 600W, power supply for testing. This PSU delivers 24A on the 3.3V rail and 30A on the 5V rail, which is pretty average for a 600W power supply. In keeping with the latest power supply guidelines, the 12V power is delivered on two rails each capable of providing up to 22A. However, that's the maximum power each 12V rail can deliver; the total combined power capable of being delivered on the 3.3V, 5V, and 12V rails is 585W, and it's not clear exactly how much of that can come from the 12V rails which are each theoretically capable of delivering up to 264W each.

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  • Per Hansson - Monday, August 27, 2007 - link

    If you take a DMM and measure the power drop on the actual molex connectors, and not take the results directly from the Chroma how does it look then?

    I suspect you have an exponential increase in resistance which causes the Chroma to display incorrect voltage values... (Because of the cable length from the PSU's connectors and up to your load, including interface boards)

    Sincerely - Per Hansson
  • MrOblivious - Monday, August 27, 2007 - link

    Well that and if this really is a Solytech (Deer) it could just be a flaming hunk of crap. Reply
  • Per Hansson - Monday, August 27, 2007 - link

    Yea, but the voltage resistance issue is something that has been the same for all PSU reviews here at Anand

    When you have this problem with all PSU's you need to realize there is something wrong with your testing equipment, sorry for being so blunt... (Especially since none of the other 2 big sites report the same)

    And yes, some scope readings for this DEER PSU sure would have been interesting (just to make sure to beat the dead horse a bit more)
  • Christoph Katzer - Tuesday, August 28, 2007 - link

    Strange though that the Zippy G1 has nearly the whole time close to to 12.0v. I have seen reports from the companies and they look similar (also the high efficiency) and thus I don't think the resistance will be a big issue. Reply
  • MrOblivious - Tuesday, August 28, 2007 - link

    Are they using a Chroma as well for those test reports? Or are they reading directly at the connector without another interface like the spec calls for?

  • Christoph Katzer - Tuesday, August 28, 2007 - link

    "Every" company in Taiwan uses Chroma for their own evaluations. Reply
  • Per Hansson - Tuesday, August 28, 2007 - link

    Christoph Katzer; The issue is of course not that you are using the Croma, it's a great unit; however, the way you use it will most likely result in incorrect voltage readings

    Due to the fact that the resistance in the cables loading the unit will most likely result in a exponential increase in resistance, therefore the results shown by the Chroma will be incorrect, and more incorrect as the load increases and the resistance exponentially increases...

    Just putting a multimeter on an unloaded Molex connector, or, directly on the molex connector you are loading (and not further down where the chroma reads the voltage) would quickly prove or disprove my theory
  • mindless1 - Thursday, August 30, 2007 - link

    You are correct, that a high enough current on too low a wire gauge does cause significant voltage drop, I have observed it many times myself particularly with some of the poorer PSU using 12V connectors with less than 18 ga. wires.

    However, similarly we can't just take the reading from an unused molex connector instead, as a PSU is spec'd to provide it's voltages at the load through the existing wiring harness. It is not necessary to try to evenly distribute that load across all the wire pairs in that harness as that is a practically impossible scenario for implementation running a system, so a bit of a derating factor is needed to appoximate the typical expected loads. IMO, a good start would be loading each supply wire at about 6A (not counting ground returns) up until the rating per rail is met, leaving some supply wires per rail unused when (sum of rail wires * 6A) > rated current per rail. Obviously some connectors and leads are more robust and necessary than others, for example a floppy connector should just be ignored while the 2 x n 12V CPU connector should always be used.
  • mindless1 - Thursday, August 30, 2007 - link

    I meant, high enough current on too high, too small a wire gauge. Reply
  • JarredWalton - Tuesday, August 28, 2007 - link

    But wouldn't regular PC components drawing power from a PSU result in the same sort of increase in resistance? (Note: I'm not at all an electrician, so I could be wrong. Just asking a question.) Reply

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