Upgrading PSU in HP p6270z from 300w to 600w or more. What's best?

So, my HP p6270z currently has a 300w PSU but I would like upgrade it to the cheapest 600w or greater PSU that will fit in it. Any recommendations on which ones will work for me?

I'm gonna take a shot in the dark, but, will this one fit?
http://www.newegg.com/Product/Product.aspx?Item=N82E16817152035
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More about upgrading p6270z 300w 600w more what best
  1. Raidmax power supplies are probably the worst build/quality power supplies ever. They don't out put 600w and can literall "blow up" Get this one: http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026
  2. Thanks for the reply!

    Ok, that PSU looks fine, but I need something that is 600w or higher, because I plan on running an HD 6970 or HD 7970.

    If it makes a difference, this is the exact PSU I currently have:
    http://www.google.com/products/catalog?q=ps-5301-08ha&hl=en&prmd=imvns&bav=on.2,or.r_gc.r_pw.,cf.osb&biw=1920&bih=955&ix=hcb&um=1&ie=UTF-8&tbm=shop&cid=18105089506713852462&sa=X&ei=H4wcT-uAIMvo2gXuydH0Cw&ved=0CGQQ8wIwAA
  3. How about this one? Will it work in my computer? Is it any good?
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817148030
  4. http://www.newegg.com/Product/Productcompare.aspx?Submit=ENE&N=100007657%20600112163&IsNodeId=1&bop=And&CompareItemList=58|17-371-056^17-371-056-02%23%2C17-121-092^17-121-092-TS%2C17-194-099^17-194-099-TS%2C17-121-088^17-121-088-TS%2C17-151-111^17-151-111-TS
  5. The Radeon HD 6970 is a 300 Watt card and the Radeon HD 7970 is a 250 Watt card so I'll use the Radeon HD 6970 as the reference for determining the power supply requirement.

    For a system using a single Radeon HD 6970 graphics card AMD specifies a minimum of a 550 Watt or greater power supply. The power supply should also have a combined +12 Volt continuous current rating of 38 Amps or greater and have at least one 6-pin and one 8-pin PCI Express supplementary power connectors.

    Total Power Supply Wattage is NOT a crucial factor in power supply selection!!! Total Continuous Amperage Available on the +12V Rail(s) is the most important.

    Seasonic S12II 620 Bronze 620W for $69.99
    • combined +12 Volt continuous current rating of 48 Amps
    • one 6-pin and one (6+2)-pin PCI Express supplementary power connectors

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817151096
  6. Thank you so much for the advice! I think I have picked a winner!
  7. One more question, though:

    Do the PSU dimensions have to be EXACTLY the same as the old one in order to fit?
  8. TurboDiesel6point7 said:
    One more question, though:

    Do the PSU dimensions have to be EXACTLY the same as the old one in order to fit?

    A Standard ATX form factor power supply has the following dimensions:

    150mm W x 86mm H x 140mm D

    or

    5.9"W x 3.4"H x 5.5"D

    The width and height are standardized.

    The depth will vary depending on the power capacity of the power supply unit.
  9. Ok. It seems my current PSU has the same width and height and very similar depth to the PSU I am looking at, which is:
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817371031
    Is this a good PSU?
    I also have decided on my card, which will actually be a 6870 rather than a 6970:
    http://www.newegg.com/Product/Product.aspx?Item=N82E16814103196&Tpk=diamond%20hd%206870
    The PSU I have my eyes on will not only has the 12v+ amperage to run a 6870 but also a 6970 if I need to. The only issue I can find is that, according to Newegg, the PSU has one 6-pin PCI and one 6+2-pin PCI, but the 6870 needs 2 6-pin PCI's.

    Will I be able to take of the extra two pins on the one "6+2" PCI cord in order to make 2 6-pin PCI cords or will I need to buy an adapter? If I need to buy an adapter, which one would you all recommend for this PSU and HD 6870?

    Does anyone else see any other issues with this potential final PSU/GPU combination?

    Thanks again!

    TurboDiesel6point7
  10. Yep that antec psu is a pretty solid unit!
  11. What about that 6+2 pin PCI connector? Can that be turned into a 6-pin PCI connector?
  12. For a system using a single Radeon HD 6870 graphics card AMD specifies a minimum of a 500 Watt or greater power supply. The power supply should also have a combined +12 Volt continuous current rating of 30 Amps or greater and have at least two 6-pin PCI Express supplementary power connectors.

    The Antec Neo ECO 620C, with its +12 Volt continuous current rating of 48 Amps and with its one 6-pin and one (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power a system using a single Radeon HD 6870.



    You can use just the 6-pin portion or both the 6-pin and the 2-pin together to form an 8-pin connector. There's no need to buy or use any adapters.
  13. Just use the 6 pin and leave the other 2 pin hanging!
  14. Yes! Thanks to everybody for helping me formulate my new mods!

    Here is my current setup:
    AMD Athlon II X4 630 Quad 2.8GHz
    8gb DDR3 RAM
    XFX HD 6570 1GB DDR3
    300W PSU
    1TB 7200rpm
    Windows 7 Pro 64 Bit

    Changes:
    New PSU: Antec 620W
    New GPU: Diamond HD 6870
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