Power Supply for HD5850!!!

Discussion in 'Hardware Q&A' started by george101, Oct 15, 2009.

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  1. george101

    george101 Good Boy

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    am planning to get myself an hd5850 graphics card as soon as it is available. but am having a CM extreme power 500W spms now and it has only 1 4-pin PCI-E power connector while 5850 requires two 75W 6-pin PCI-E power connectors. please specify the least expensive power supply that can power a 5850 and meet my power req... my system spec : C2Q 9550, MSI P45, 1TB+(500x2)GB HDD, 2x2GB DDR2, etc

    should a corsair 550W be enough??? if not which one should i go for???
     
  2. desiibond

    desiibond Bond, Desi Bond!

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    GlacialPower 650AA
    Corsair VX550W
     
  3. Krow

    Krow Crowman

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    ^Antec EA650W is also good for him. :)
     
  4. maverick786us

    maverick786us Member

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    Corsair HX 750 and HX 850 are the best PSUs in the world. They are modular and come up with 7 Year warranty.

    If you want to Over Clock your HD5850 as well as PSU go for any of these PSUs. If budget is a constrait for you, you can go for less expensive HX 620.

    Goodluck
     
  5. Krow

    Krow Crowman

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    HX620 is for 7.4k. Non-modular is the way to go I think, although modular rocks. :)
     
  6. maverick786us

    maverick786us Member

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    Last october I purchased HX 620 for 6.8K. If Budget is a constraint he can go for TX 650 which is also good. But he need atleast a 600W PSU for OCing HD5850 and QX9XXX
     
  7. comp@ddict

    comp@ddict EXIT: DATA Junkyard

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    Either HX620W or TX650W your choice...go for any of these two..........

    um?
     
  8. Krow

    Krow Crowman

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    That is why I suggested the GlacialPower 650AA @ 4.5k it is the most VFM PSU. Gives 88-92% efficiency. This one and Antec EA650W can easily handle upto 750W loads.
     
  9. rohan_mhtr

    rohan_mhtr Most wanted

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    What are your other hardware , would you be overclocking ? Is your psu of power plus series or just extreme power ? 5850 is based on 40nm technology and does not consume much power . It will easily work on 500w extreme power plus psu if you use a 6 pinn converter but is not recommended . If you are not into overclocking and not using more then 4 hdds and 2 optical drives and 5 fans !! the corsair vx400. vx450 is enough for you but if you have money to burn then go ahead and spend more then 5k on a psu to be future proof or should i say waste of money . I am currently using my freinds 4870 on my rig which consists of e7500 @ 3.2ghz , 2 hdd's , dvdrw and 3 fans on a coolermaster 500w extreme power plus using a 6 pin converter and everything is superfine . Remember 4870 requires more power then 5850 !
     
  10. Krow

    Krow Crowman

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    I'd say a big NO to the CM Extreme series. CM Real Power is what he should be looking at. Maybe it can handle the 5850, although I have my doubts as it consumes only 19W on idle, but around 190W on load, so to be safe, OP is better off with a better PSU.
     
  11. asingh

    asingh New Member

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    Why are we suggesting such high PSU to him.

    The max power pull the HD5850 will ever do is 180W.

    He is more than good to go for a 550W. Even a 450W one will do, if it has 2 PCI.Express 6 pin connectors.

    GPU = 200W (max + OC)
    CPU = 200W (max + OC)

    That takes care of the big chunks. No ways will he need a 650W PSU. Heck I run my Crossfire on that, with GPUs hardly as efficient as the 5xxx series.
     
    Last edited: Oct 17, 2009
  12. Krow

    Krow Crowman

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    The VX450W doesn't have 2x PCI-E. Is there any way we can make that 1xPCI-E use both sockets on the GPU?
     
  13. comp@ddict

    comp@ddict EXIT: DATA Junkyard

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    Dude...settle for a VX550W Corsair..

    Me on the same...only my config is X4 620....+ HD5850(this week :D)
     
  14. asingh

    asingh New Member

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    We can take two Molex(each from a separate rail), and create 6 pin via a molex to 6 pin converter.

    [​IMG]

    Or he can go for the VX550 which has one PCI-E 6 Pin and one PCI-E 6+2 Pin. 2nd solution is more elegant, cause he also has good overhead.
     
  15. Krow

    Krow Crowman

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    Is the molex to PCI-E 6+2 pin converter available? I might need to buy when I get a GPU. Thanks for the image and answer to my query asigh.
     
  16. asingh

    asingh New Member

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    Yes it is readily available. I picked them up easily from Nehru Place. Else if you order from Lynx -- Amarbir can source them. In Nehru place one was RS 250.

    You can also get this type:
    [​IMG]

    This take one molex input and makes it a PCI-E 6 pin. There is a huge debate on the net, about which type to use. The first type I showed will require two molex from your rails, this type will require 1 molex from a rail. I used a mix of both. Since I needed 4 x PCI-E 6 Pin. 2 nodes I used from the native TX650, 1 node I created using 2 molex -->1 PCI-E 6 Pin, and one node I created 1 molex -->1 PCI-E 6 Pin. This way I had a total of 4 PCI-E 6 Pins for the Xfire.

    People say if you use 1 molex -->1 PCI-E 6 Pin it creates a load on the rail, and using
    2 molex -->1 PCI-E 6 Pin balances the load out evenly. I kept my rails free when I created the fabricated PCI-E 6 Pins, and system is running just dandy....! :)
     
  17. rohan_mhtr

    rohan_mhtr Most wanted

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    I got it for just 25bucks :razz: , BTW it is also provided with most of the cards .
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    Posted again:
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    CM extreme series are of two types ie extreme power which is old and crap and extreme power plus which is a recent product and a better one too , many people confuse them due to their name .
     
    Last edited: Oct 17, 2009
  18. Krow

    Krow Crowman

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    Thanks for the replies guys. @ rohan Please post some review links which show better performance. When the CM Real Power Pro 460W is available for 3.5k, why go for the extreme series at all. The real power series is great. :)
     
  19. OP
    OP
    george101

    george101 Good Boy

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    does powercolor 5850 provide Molex to Pcie connectors???

    guess i will be going for vx450 :)
     
  20. rohan_mhtr

    rohan_mhtr Most wanted

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    Her you go , its the review for 500w extreme power plus which i am using currently
    http://www.hardwaresecrets.com/article/728
    Also notice the difference between extreme power and extreme power plus series .
    -----------------------------------------
    Posted again:
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    I guess so but better watch any unboxing video of 5850 on youtube , you would get a clear idea of whats in the box .
    BTW vx450 is a great choice and you you wont have to worry at all .
     
    Last edited: Oct 18, 2009
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