Efficiency and PFC


Super Flower claims this is a high efficiency power supply, and indeed we see up to 87% with 230VAC input. The curve is typical of most power supplies, starting low and reaching its peak at around 50% load. Maximum efficiency regardless of input is at around 300W, and depending on input voltage you will want a minimum load of 100W to 125W in order to stay above 80% efficiency. 80Plus Bronze certification requires a minimum efficiency of 82% at 20% and 100% load, and 85% efficiency at 50% load; the Super Flower Amazon 650W does meet those requirements, but only with 230VAC; 120VAC appears to barely miss the mark, although we're probably splitting hairs.


The power factor correction is one of the best we have seen in recent time. With lower input voltages, you will have an almost constant PFC of more than .99.

DC Output Stability and Quality Temperatures, Fan Speed, and Acoustics
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  • Choppedliver - Tuesday, October 21, 2008 - link

    Did I miss something or did the reviewer not tell us how much this thing costs and where you can get it? Reply
  • Christoph Katzer - Wednesday, October 22, 2008 - link

    "The only real question we have is pricing. We will have to wait until Super Flower begins shipping these units to get a price quote."

    In the time you wrote that totally unnecessary post you could have found it on the last page.
    Reply
  • Choppedliver - Sunday, October 26, 2008 - link

    Obviously I missed it, which is why I said "Did I miss something"

    And for your information dickwad, I looked on all the pages, just missed that last sentence. It is possible. I goofed. Don't be such a little bitch about it.

    I thought pricing info would be on the first page where it says "Prices"... silly me, I thought that would be prices for this product reviewed, when in fact it's just revenue generating advertisements ( which I DID click on because I did THINK those were the prices for this product... your welcome. Send those few dollars to the JWAP Foundation. ( Journalists Who Aren't Pussies )

    Let me rescend my apology. I read the article. Right below where it says

    Date: October 16th, 2008
    Topic: Cases/Cooling/PSUs
    Manufacturer: Super Flower Inc.
    Author: Christoph Katzer

    It then says:
    Prices
    - TECHONWEB $122.91
    - HP Small/Medium Business $29.89
    - Dell $99.99
    - Dell SMB $39.99
    - HP Small/Medium Business $40.35
    - Dell $99.99


    Silly me, Im thinking this is a great deal! It doesnt say anywhere on this first page that this is a "not yet shipping" product.

    Why would you? Its obvious that the advertisements are strategically placed to generate clicks through trickery.

    Reply
  • Spacecomber - Thursday, October 16, 2008 - link

    "Several years back their units were a lot more common and you could find them in online shops around the globe, but their presence has been fading. However, we have reviewed a few other brands that were built by Super Flower."

    For those whose memory isn't all that great, and who are too lazy to go back through the previous P/S reviews, could you remind us which other power supplies that have been reviewed were built by SuperFlower?
    Reply
  • Christoph Katzer - Thursday, October 16, 2008 - link

    Kingwin for example: http://www.anandtech.com/casecoolingpsus/showdoc.a...">http://www.anandtech.com/casecoolingpsus/showdoc.a...

    You can recognize other SuperFlowers by their distinctive heatsink design and the cable management with the special connectors. Some Topower builds have the same cm-connectors though, since it's actually their patent but until now only Tagan used them (afaik).
    Reply
  • Souka - Thursday, October 16, 2008 - link

    Only thing I see good about this PSU is the fan and resulting noise (lack of) from it.

    Voltages are too far out of alignment, and the ripple isn't great.

    Reply
  • symbul - Monday, October 20, 2008 - link

    You are KIDDING about the ripple, right? I mean, a max 7.87 mV (if accurate in the retail version) is a great spec. Even the 650W Antec Signature (which is the best 650W out there) can't do that... Reply
  • Spivonious - Thursday, October 16, 2008 - link

    That 12V graph looks pretty shaky. What does that mean in terms of the voltage/power delivered? Reply
  • Spacecomber - Thursday, October 16, 2008 - link

    I was looking through the comments to see if anyone had any insight on how to read that graph, too, since it looked to me like what I would assume to be rather "rippled", especially at full power.

    On another topic, with no production units available and therefore no firm pricing, this kind of preview is interesting, but it is not as helpful as a review of something that I can actually buy and therefore determine an actual value for. Certainly, we haven't run out of available power supplies to review at this point, have we?
    Reply
  • HOOfan 1 - Thursday, October 16, 2008 - link

    below 8mV of ripple...is extremely low. So low I am not sure I believe it. Reply

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