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Discussion in 'System Builder's Advice' started by Mr.Alaska, Dec 10, 2011.

  1. Mr.Alaska New Member

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    Dang It's only $20 more after mail-in rebate.
     
  2. entropy13

    entropy13

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    Is the PowerBird 900 at least 87%-90%-87% efficient @45-50C for 20%-50%-100% loads?


    EDIT: Nope.

    http://www.hardwaresecrets.com/article/Topower-PowerBird-900-W-Power-Supply-Review/738/7

    So how is it better then? Noise and ripple as well as voltage regulation are similar to the Seasonic/XFX and OCZ PSUs, and the Superflower made PSUs are just a bit behind.
     
  3. johnnyd New Member

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    Yeah, I'd shoot for it. A lot more PSU for the money. ;)

    It's not, it's efficiency curve is %80-83-85. However, you save $8 a year with Gold over Silver in U.S prices. Efficiency is much of the least important thing of a unit.

    http://www.hardocp.com/article/2011/10/04/80_plus_irrelevant_to_you_when_buying_psu/3

    On the other hand, it gets lower transient response, ripple and closely good regulation as the SeaSonic Platinum 1000. That is the best one out of all those.
     
  4. entropy13

    entropy13

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    The article is saying that the 80PLUS certification is irrelevant, not that efficiency is the least important thing in a unit. :rolleyes:

    And a 3-year warranty from Topower isn't exactly good when most of those that I listed (excepting Rosewill iirc) have 5-year and 7-year warranties.
     
  5. johnnyd New Member

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    In U.S where electricity is cheap, it's one of the least important things. Ripple, regulation or even modularity/color finish trump efficiency. I mean, at least they should.

    Anyway I suggested the Strider 1200 instead.
     
  6. entropy13

    entropy13

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    Electricity in the developed countries aren't cheap. They're just cheaper than the other "typical" commodities.

    "Ripple, regulation or even modularity/color finish trump efficiency. I mean, at least they should." Ok, let's go with this. Efficiency is less important. But considering that noise, ripple and voltage regulation are almost identical anyway, you'd still opt to sacrifice efficiency...?
     
  7. johnnyd New Member

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    Uhm, what are you actually on about? Not only those aren't the "same thing", performance of built of a PSU is way more important than efficiency. Would you pick a Gold rated Coolmax unit, or a Silver rated PC P&C?
     
  8. Mr.Alaska New Member

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    If we can all agree that the Powerbird 900w is good and anything more is overkill than thats what I'm getting.
     
  9. johnnyd New Member

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    Sure, you can't go wrong with either the PowerBird or the Strider. Up to you chief, your call. GL. :)
     
  10. Mr.Alaska New Member

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    Just out of curiosity in normal conditions will anyone notice ripple or noise that I see some reviews say is bad but still passes? I'm not talking about of these PSU's specifically just in general with some reviews I read.
     
  11. johnnyd New Member

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    An oscilloscope is required for ripple measurement, it (ripple) is basically dirty power. But yeah, as long as it's under ATX specs (120mV for major {+12v}, 50mV for minor rails {+3.3v/+5v) you wouldn't notice any difference. However if it's beyond, it might cause instabilities or worst, part failure. That also depends on loading levels. For example, a PSU may have 100mV ripple at 1200W, but if it gets 25mV at 500W, then you wouldn't have much to worry about. That said, ripple is one of the strongest points of the PowerBird. It gets 30/10mV while pulling 900W in the hot box. The Strider gets a bit higher, but it'd make up for it from it's higher capacity.
     
    Last edited: Dec 18, 2011
  12. Mr.Alaska New Member

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    I mostly understand that. So unless its way out of spec I will never notice. Anyone have any experience with adorama.com or nothingbutsoftware.com I can save $40 if I get the case and SSD from them.
     
  13. Irony

    Irony

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    I have the Gskill RAM you're getting. Its great RAM. It will run at 1600 with timings at 7-7-7-24, and I got mine to do 1840mhz. I'm very happy with it, especially for 29.99!
     
    Crunching for Team TPU
  14. Mr.Alaska New Member

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    Unfortunately I missed the sale and its back to $43.99. Should have jumped on it when I had the chance.
     
  15. Irony

    Irony

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    Well thats sucky
     
    Crunching for Team TPU
  16. Mr.Alaska New Member

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    Last edited: Dec 22, 2011
  17. Mr.Alaska New Member

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    Sorry for the double post but I had a question. When the new AMD processor comes out will it make the GTX 580 price drop more than $100? If not I might as well order everything now.
     
  18. linoliveira

    linoliveira

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    I doubt the price will drop at all, because the 7970 will be priced at 550$ if the rumors are right. Maybe when the 7950 launches (i think performance wise it will be on par with the GTX 580) and it will cost much less than the 7970.

    Just my opinion, but if you want a top performer, go with the 7970 when it launches in middle January. It eats the GTX 580 for breakfast and consumes much less power. With optimized drivers i believe the 7970 will have some serious gains in performance as its a fresh new architecture that surely needs some tweaking, and it will make it even more attractive (just my thoughts here).
    You can find a review of the AMD 7970 HERE.

    Cheers ;)
     
  19. Mr.Alaska New Member

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    Theres always that one little upgrade that only a few bucks more I could get but so far its added up to like $500. I need to learn when enough is enough but I will wait and see what happens. If it's as good as the link shows I will get it.
     
  20. Irony

    Irony

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    Hear hear. buy it buy it buy it!
     
    Crunching for Team TPU
  21. Mr.Alaska New Member

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    So it looks like I will be getting the 7970 if I can find one. Suggestion on brands?
     
  22. JrRacinFan

    JrRacinFan Served 5k and counting ...

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    At this point in time they are all reference. Just get one with the best warranty available.
     
  23. linoliveira

    linoliveira

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    XFX launched a card with a custom dual fan cooling system, but you pay a 50$ premium for it.
    You can find it HERE. The rest are pretty much the same.
     
    JrRacinFan says thanks.
  24. Mr.Alaska New Member

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    I guess I was trying to find out if I should avoid someone for whatever reason. The only one in stock right now is MSI buts its $580. Wonder how long it will take for the other cheaper companies to get more.
     
  25. linoliveira

    linoliveira

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    Avoid PowerColor because they are using inferior components as announced HERE.
     

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