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750W or 860W

Discussion in 'General Hardware' started by Akla, Jul 13, 2013.

  1. Akla New Member

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    Hi guys,
    I'm new and i have this question torturing me, I never know the wattage of the psu i should buy, I'm upgrading my rig and it is composed like this:
    Gigabyte GA-FXA990-UD7
    8GB Corsair Dominator @1600Mhz
    Phenom II 955 BE 3.2Mhz (I will try to reach 4.0 or 4.2)
    Corsair H110 Push/Pull
    EVGA GTX760 SC ACX
    1SSD and 1HDD

    I'm considering a Seasonic P-760 or a Seasonic P-860.
    What should I buy? All thoughts are welcome.
    Thank you in advance and sorry for my english.
     
  2. BiggieShady

    BiggieShady

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    Both are very good, and P-860 is an overkill for this configuration - even the P-760 is an overkill for that. That system would keep 650W PSU at optimum efficiency at 100% GPU and CPU load with overclocking headroom. 650W would be the sweet spot, but if you are planning to SLI that GTX 760 later and OC everything, go for Seasonic P-860.
     
  3. Akla New Member

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    Thanks I'm planning to change the CPU when the new AMDs AM3+ will have 16cores, that should not be far away to be announced. I forgot to mention this.....my bad
     
  4. BiggieShady

    BiggieShady

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    One thing to consider is fan speed on the PSU. If you take 800W PSU, fan would barely speed up on full load. On 400W PSU, same system would also work at full load, only PSU fan would be much more audible.
     
  5. Frag Maniac

    Frag Maniac

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    Unless you're planning on SLI or a considerably more powerful GPU down the road, a decent 500w PSU would be plenty adequate for that rig.
     
  6. McSteel

    McSteel

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    Agreed, 450-550W would be plenty, even with overclocking...
    Where are you buying from?
     
  7. shovenose

    shovenose

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    The lower wattage one will be plenty.
     

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