Psu calculation

Im sorta confused about my psu requirements since the fx 8350 will use a lot of energy. Currently I have 750W and im upgrading to 8350 along with a newer hsf.
Question...do I need a different psu after the upgrade or am I okay with my current psu

System:
fx 8350- I do plan on overclocking the heck outta my 8350 once I get it (right now I have a 6100 Oc at 4.4 stable at 1.423)
noctua d14 with two fans (included in the 8 fans listed below)- coming soon with m 8350. Currently I have evo plus 212
sapphire 7870 OC 1100 edition video card
8 gb 1866 Ram
Windows 8 64bit
1 120 Gb muskin chronos ssd
500 Gb WD hd 5200 rpm
8 fans inside my xigmatek Elysium case
750 W corsair psu

Ive tried an online psu calculator but it showed that I only needed a 660W psu not sure if that sounds correct or not
5 answers Last reply
More about calculation
  1. The 750W corsair should be more than enough. What model?

    fx 8350 = 125W maximum
    The reference 7870 power is 175W so say 225W for the OC version conservative
    The rest of your system should be less than 100W
    so that is only 450W.

    Sapphire recommends a 500W+ power supply
  2. For a system using a single reference clocked Radeon HD 7870 GHz Edition graphics card AMD specifies a minimum of a 500 Watt or greater power supply. The power supply should also have a maximum combined +12 Volt continuous current rating of 30 Amps or greater and have at least two 6-pin PCI Express supplementary power connectors.

    All of the Corsair 750 Watt PSUs have a maximum combined +12 Volt continuous current rating of at least 60 Amps or greater and have at least four (6+2)-pin PCI Express supplementary power connectors.

    You have way more than enough spare capacity to handle your CPU upgrade and to even add a second Radeon HD 7870 GHz Edition for 2-way CrossFire if you wanted to.
  3. hmm interesting...wow thanks guys. So if I were to say even overclock my cpu that should be enough?
    what about if I were to say add a heavy cooling system as in getting a Rasa RX240 would I need to upgrade my psu then?
  4. magnificentoxo said:
    hmm interesting...wow thanks guys. So if I were to say even overclock my cpu that should be enough?
    what about if I were to say add a heavy cooling system as in getting a Rasa RX240 would I need to upgrade my psu then?

    With just a single Radeon HD 7870 GHz Edition graphics card your PSU will have no problem handling an FX 8350 overclocked to 5 GHz or higher and running a RASA RX240 kit.
  5. http://www.thermaltake.outervision.com/
    This is exactly what your looking for ^

    Oh and just from the specs of your build i can tell you that you have more than enough power.
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