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Thread: Building another cruncher!!

  1. #1
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    Mike029's Avatar
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    Building another cruncher!!

    Ok, before you all call me crazy.
    My sister needs a new computer. I told her I'll build it if she lets me crunch on it.
    SHE AGREED!! Now, I only have a $400.00 budget.
    This is what I have lying around.
    Old case with fans,
    HD,
    os (Win vista),
    monitor,
    and I have 2 hd 5870's to put into the box.

    The computer will be used by my niece for homework and internet. I'll need a PSU, MB, a processor, (hoping to go with an Amd 6 core if it fits the budget) and memory.

    All help is appreciated.



  2. #2
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    Re: Building another cruncher!!

    MB: http://www.newegg.com/Product/Produc...82E16813128485

    CPU: http://www.newegg.com/Product/Produc...82E16819103851

    PSU: http://www.newegg.com/Product/Produc...82E16817182072

    Memory: http://www.newegg.com/Product/Produc...82E16820227583

    Right around $400 there. I think 850W is enough to drive those 2 5870s at stock speeds. Someone chime in if I am wrong.

  3. #3
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    Re: Building another cruncher!!

    I run dual 5870s OC'd to the hilt w/ 750W. Also have 2 machines w/ 5970s running at 900 MHz on 750W. All machines supporting I7s and crunching too.


  4. #4
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    Re: Building another cruncher!!

    Quote Originally Posted by joker View Post
    MB: http://www.newegg.com/Product/Produc...82E16813128485

    CPU: http://www.newegg.com/Product/Produc...82E16819103851

    PSU: http://www.newegg.com/Product/Produc...82E16817182072

    Memory: http://www.newegg.com/Product/Produc...82E16820227583

    Right around $400 there. I think 850W is enough to drive those 2 5870s at stock speeds. Someone chime in if I am wrong.
    Same Mobo from newegg same price but free shiping.
    http://www.newegg.com/Product/Produc...-443-_-Product
    People do not grow old no matter how long we live. We never cease to stand like curious children before the great Mystery into which we


  5. #5
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    Re: Building another cruncher!!

    I run dual 5870s OC'd to the hilt w/ 750W. Also have 2 machines w/ 5970s running at 900 MHz on 750W. All machines supporting I7s and crunching too.
    That is good to know.


    Same Mobo from newegg same price but free shiping.
    http://www.newegg.com/Product/Produc...-443-_-Product
    Not exactly the same but close enough from what I can see.
    Last edited by joker; 05-03-11 at 05:29 PM.

  6. #6
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    Re: Building another cruncher!!

    WTG Mike! I like the way you think

    For the PSU 850W sounds good as long as its a quality unit.
    the math works like this: 5970 = 2x PCIe 6pin power + PCIe slot = 2x75W+75W = 225W. So two 5070s = 450W max.
    AMD 1055T = 125W max.
    450W+125W = 575W and subtract that from 850W leaves you with 225W for everything else.

    Now if you factor in PSU power degradation, say 5% a year, after the first year the PSUs Max. output drops to 807.50W. After two years its Max. output drops to 765W.

    The reason I bring this up? This power drop issue is what killed my server's ASRock board. That POS Tuniq lost enough output in just nine months to cause the failure.

    F$


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  7. #7
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    Re: Building another cruncher!!

    I have owned 6 Rosewill PSU's in my life (and those were the cheaper ones) and not one of them has failed. 2 of them are still running today (a 400W and a 500W) and my 550W unit is sitting in the closet as a backup (you know you have a backup too ). It is ultimately up to you Mike.

    P.S. What do you guys think about the other components?

  8. #8
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    Re: Building another cruncher!!

    Quote Originally Posted by joker View Post
    I have owned 6 Rosewill PSU's in my life (and those were the cheaper ones) and not one of them has failed. 2 of them are still running today (a 400W and a 500W) and my 550W unit is sitting in the closet as a backup (you know you have a backup too ). It is ultimately up to you Mike.

    P.S. What do you guys think about the other components?
    Its looks a good solid setup.

    I hope you don't think I was dissing your PSU suggestion?


    Future Maker? Teensy 3.6

  9. #9
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    Re: Building another cruncher!!

    I hope you don't think I was dissing your PSU suggestion?
    Indeed I did. It made me cry. TT

  10. #10
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    Re: Building another cruncher!!

    Quote Originally Posted by joker View Post
    Indeed I did. It made me cry. TT
    LOL.... Why I otta.... joker! Bam, to the moon!!!!


    Future Maker? Teensy 3.6

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