Power Supply Thread (need experts)

Discussion in 'PC hardware help' started by GTR35, Nov 6, 2007.

  1. GTR35

    GTR35 Active member

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    So guys i'm doing a research on graphics card but power supply is also a important aspect of GPU so

    Good brand and affordable PSU for:

    - 7600 single GPUs + SLI
    - 7800 single GPUs + SLI
    - 7900 single GPUs + SLI
    - 7950 single GPUs + SLI
    - 8400 single GPUs + SLI
    - 8500 single GPUs + SLI
    - 8600 single GPUs + SLI
    - 8800 single GPUs + SLI

    oh lets say the system is a Intel E6850 CPU; P5N32E Sli Mobo; 2GB of OCZ RAM; 250 SATA II 7200.10 RPM...

    please and thnx...
     
  2. Waymon3X6

    Waymon3X6 Regular member

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    7600-8600

    Corsair 520 watt

    8800 SLi

    OCZ, Corsair, Antec 1000 watt. A 600 watt will do for a single card, but something with more juice to offer is required for duel ultras.
     
  3. NJman

    NJman Member

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    also I've said this in another thread, watch for amps. make sure that +12v to __A is correct for the card. Most cards will have what the requirements for Wattage and amps in the specs. If you don't have the proper amount of amps sadly over time you can kill the card, PSU, or both.
     
  4. GTR35

    GTR35 Active member

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    thnx for the help...i'm busy running my 8600GTS with 450w...do you think its a bit dangerous?...

    what do you guys think of the PSU its the cheapest i could find...but the rating is bad...

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817171014

    can anyone give me a good suggestions, by the way i'm gonna buy 8800GT so good power, brand and cheap...i dont know which OCZ, Corsair, Antec PSU is good...
     
  5. PeaInAPod

    PeaInAPod Active member

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    If you can afford it I would go with whatever PC Power and Cooling power supply you can afford. They are hands down the best in the business. Otherwise I would go with OCZ as they recently bought out the PC Pwr & Cooling folks to add to there portfolio.\

    - Just remember a ton of expensive high end hardware can be reduced to a pile of trash if a cheap/inexpensive powersupply is used.
     
    Last edited: Nov 7, 2007
  6. GTR35

    GTR35 Active member

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    yeah i notice that...thats what happened to my old pc...
     
  7. PeaInAPod

    PeaInAPod Active member

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    Nice huh? Depending on what you get 7 year warranty :) I would recommend either this PSU or this one.
     
  8. GTR35

    GTR35 Active member

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    they are the same PSU?...which is the other one?...and i never heard of the brand before...
     
  9. PeaInAPod

    PeaInAPod Active member

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    My bad I got my thoughts messed up. I am basing my suggestions on what is offered at newegg.com and based on that I would recommend the Silencer 750 Quad. Here are the features listed on the site.

    And as far as PC Power and Coolings Reputation this pdf from there sites lists some of the customers who trust PC Pwr & Coolings power supplys to power there equipment. The list includes the likes of...

    All divisions of the US Military
    Universal Studios
    Sony
    Google
    John Hopkins
    Nintendo
    nVidia
    CBS Television
    ABC Television

    Theres lots more. Trust me this power supply will probably be the last one you ever need it is that powerful and that capable.
     
  10. GTR35

    GTR35 Active member

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    hmm...thats great but i dont think i can get it in South Africa...never heard of the brand before...
     
  11. PeaInAPod

    PeaInAPod Active member

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    What store will you be buying all your pc parts from? And yes we/I know you have "never heard of the brand before" but isn't that why you created a thread about power supplies were you asked for experts? Look nearly all the power supplies listed in the first page aren't even from power supply manufacturers. Corsair makes memory not PSU's and Cooler Master they specialize in cases. So anything from these companies would be a rebranded power supply. And a quick look at the page for the Cooler Master PSU you posted shows that they do not offer anything besides the standard 3 month or 1 year warranty. And on top of that the 12 volt rail which is what plugs in and powers your videocards is only rated at "+12V1@18A,+12V2@18A". So the all it can deliver to your videocards is 18 amps. A number of the 8800 GT cards are listed as requiring 22 amps for a single card configuration or 24 amps for dual cards. If you don't care for the PC Power and Cooling brand fine. But let me know what store/eRetailer you plan to buy from so I can post some PSU possibilites you will be able to purchase.
     
  12. GTR35

    GTR35 Active member

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  13. dragnandy

    dragnandy Regular member

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    will anything bad happen to your computer if your psu has a lot of excess watts. like say if mine only needs 300, what if i put one with 600, will anything bad happen?
     
  14. PeaInAPod

    PeaInAPod Active member

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    @dragnandy

    Nothing bad should happen from using a quality PSU that delivers more wattage than needed. You see PSU's don't send all there available power to the pc components connected to them, so if you PC only consumes 300 watts and you have a 600 watt power supply the 600 watt power supply won't be supplying all 600 watts it will only be delivering the 300 watts needed. And you get the problems from other PSU's damaging your components when you use a cheap PSU. Like if you can buy a 750 watt PSU for $50 US then obviously there is something wrong there. Either the PSU is "hot"(lol), or the PSU is a piece of crap and will damage your system.


    @GTR35

    For the online stores most of them stock some pretty good PSU's. If you give me your price range I will post some the better PSU's for your PC setup that I find on those sites you posted. Also if you are uncomfortable with buying online and would rather buy at a physical store give me the web page for those stores if available and I will look at there inventory.
     
  15. GTR35

    GTR35 Active member

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    Last edited: Nov 9, 2007
  16. PeaInAPod

    PeaInAPod Active member

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    Alright but how much are you able to spend? I want to find the best PSU for you within your budget.
     
  17. GTR35

    GTR35 Active member

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    i think i'll buy from these stores instead:

    http://www.sybaritic.co.za/store/
    http://www.zaps.co.za/
    http://www.pcint.co.za/
    http://www.pc123.co.za/catalog/
    http://www.take2.co.za/

    my budget is around R1000 - R1500

    but

    which one is better?

    the one that sammorris said:

    http://www.prophecy.co.za/stealthxstream-600w-silent-120mm-powerwhisper-tech-p-21971.html

    or this one?

    http://www.prophecy.co.za/gamexstream-70...ply-p-2152.html

    what do YOU recommend beside those 2?
     
    Last edited: Nov 9, 2007
  18. PeaInAPod

    PeaInAPod Active member

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    Of the two that sammorris recommended I would have to say not to go with either one. As they are only rated to deliver 18 amps to each pci-e/videocard plug so they couldn't power a 8800 GT requiring 24 amps.

    **One card requires 22 amps and two cards require 24 amps per line. When I get back from work I will find a PSU that fits your needs/price range.
     
    Last edited: Nov 9, 2007
  19. PeaInAPod

    PeaInAPod Active member

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    @GTR35

    Sorry GTR I spent about 30-45 minutes cruising the sites you posted and didn't see anything, but that doesn't mean that nothings there. So I will give you some pointers for locating a video card. If you ever plan on running two cards in SLI I recommend you buy a PSU that can supply the amount of power needed. A single card like the one you said your getting (8800 GT) requires 22 amps, while running two cards in tandem will require both cards to have a 24 amps supply line. So when your PSU shopping check the specs and they should list a spec labeled +12v thats the cable for the videocard(s). A PSU with multiple +12v power supplies will have them listed as +12v(1), +12v(2), etc. So a PSU listing +12v(1) through +12v(4) would have 4 supply lines for videocards. It's a useless feature since I would bet money that you won't be running quad graphics cards. So if your only going to be running one videocard and never plan to do a SLI/dual video card setup than look for a PSU that has a +12v rating of at least 22 amps. If you plan to ever do a SLI setup look for a PSU with a +12v rating of at least 24 amps.
     
  20. GTR35

    GTR35 Active member

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    actually sammorris recommend the StealthXstream one not the GameXstream...anyways...thnx for taking your time helping me...

    um...lets see...this one is GameXStream PSU:
    +3.3@36A,+5V@30A,+12V1@18A,+12V2@18A,+12V3@18A,+ 12V4@18A,-12V@0.8A,+5VSB@3.0A

    they all 18A only

    this one is the PC Power & Cooling:
    +3.3@24A,+5V@30A,+12V@49A (Large Single Rail),-12V@0.8A,+5VSB@3.0A

    only one 12V but its 49A...


    so what PSU do you use?


     

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