crossfire 7870 psu

Discussion in 'Video Cards and Graphics' started by dragantoe, Nov 2, 2012.

  1. dragantoe

    dragantoe Senior member

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    I need to know if my antec neo eco 520w psu is powerful enough to run crossfire hd 7870's (his iceq) and a 3570k or if I should just sell the 7870 and get a 7970, or even wait for the 8000 series...
    thanks
     
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  3. UNhooked

    UNhooked Golden Member

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    Not powerful enough. I have 2X 7970 and my total system power at stock levels while running benchmarks exceeds 600watts. Currently using an old Pc power and Cooling 750Wat Silencer PSU with a single rail of 60Amps

    You may be able to get away using a single 7970 but I wouldn't think of OCing
     
  4. aaksheytalwar

    aaksheytalwar Diamond Member

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    Not even close. If a single runs that should be enough for you.
     
  5. dragantoe

    dragantoe Senior member

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    alright, thanks for the reply, i should be fine with the 7870 until the 8000 series comes out anyways
     
  6. lavaheadache

    lavaheadache Diamond Member

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    Nice to hear, I have my second 7970 on the way and am also using my trusty old pc power and cooling 750. I've been researching everything I can to find out if it'll be enough.
     
  7. dragantoe

    dragantoe Senior member

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    i think 750 would even be overkill 0_0
     
  8. 3DVagabond

    3DVagabond Lifer

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    While I agree that you will likely never use 750W while gaming with crossfired 7970's + 1xCPU, you will likely be in a very efficient operating range 90% of the time with a 750W PSU. I wouldn't call that overkill, but well optimized.
     
  9. UNhooked

    UNhooked Golden Member

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    I am running 3 GPUs 2X 7970 @ 1000 and 1575 mem and 1 GTX 650. No OC on the CPU.
    Planning to go watercooling soon so going to add a 18W pump.

    This has been one awesome PSU.
     
  10. UNhooked

    UNhooked Golden Member

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  11. Powermoloch

    Powermoloch Lifer

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    i'm running a rig with 2 7950 with 650 W PSU and it works fine at stock settings.