How much OC'ing can i do on a 520w PSU ?

I have a GTX 660 FTW sig 2 and really want to OC it but how far can i go on this PSU?

http://www.newegg.com/Product/Product.aspx?Item=N82E16817152028

my mobo can take it but i dont think my PSU can any thoughts ?
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  1. Your PSU is fine. Overclock all you want.
  2. Ike_ said:
    I have a GTX 660 FTW sig 2 and really want to OC it but how far can i go on this PSU?

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817152028

    my mobo can take it but i dont think my PSU can any thoughts ?


    Hi - A quality 530w unit is more than enough to run the sys and OC. The
    issue you may have is that Raidmax(made by Andyson, a bottom feeding oem)
    is a "poor quality" PSU, and I don't know how many watts & 12v rail(s) amps
    it can actually deliver.

    Given that your system can run fine on a quality 430w unit,
    then try the gtx 660 with that psu, and start saving to
    upgrade to a quality brand/model.
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