Question on Xfire and CPU.

Discussion in 'Videocards - AMD Radeon' started by h4rm0ny, Dec 12, 2014.

  1. h4rm0ny

    h4rm0ny Guest

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    I haven't found a good answer to this with searching. Is crossfire demanding on the CPU? More specifically I have an FX-8350. If I added a second card would I get the full benefit or is a more powerful CPU required to avoid bottlenecking?

    To be clear, I'm not talking about the normal situation of CPU being the bottleneck, I have heard that crossfire and SLI require CPU involvement in a way that an equivalently powerful single GPU would not. Is this the case?

    Thanks!
     
  2. Extraordinary

    Extraordinary Guest

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    People suggested my CPU (8350) was the reason all my scores with my 295X2 were lower than everyone elses with Intel setups
     
  3. h4rm0ny

    h4rm0ny Guest

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    That's what I'm afraid of. I also have an 8350 and I'm happy with it - nothing appears to be bottlenecked by it. But my understanding is that putting in Xfire isn't like just having a more powerful card - there is a CPU hit. I just don't know if it's large or not.
     
  4. Extraordinary

    Extraordinary Guest

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    Even if it is, you're still gonna see considerably better performance with 2 cards when CF works, I had a 290 before the 295X2 and it destroyed the 290s scores

    And you could look at it like this, when / if you decide to upgrade your chip/board to Intel, you get a free graphics boost too
     

  5. ---TK---

    ---TK--- Guest

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    With that cpu and multi gpu expect a big bottleneck. I would get the fastest single gpu you can afford with that cpu.
     
  6. h4rm0ny

    h4rm0ny Guest

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    That's true. I'm actually thinking I might just sit the next year out in terms of CPU upgrade. Wherever I go from here is a whole new motherboard either way and that's going to be expensive. So I'm thinking of possibly getting a second card as a cheapish way of getting a big boost and I'll save the big costly upgrade for 2016.

    Thanks.
     
  7. h4rm0ny

    h4rm0ny Guest

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    Well that's always good advice. :) But like the old joke - you can't get there from here. In my current situation, a second card cross-fired is going to be better economic sense than a single better card, I think.
     
  8. eclap

    eclap Banned

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    You'd be better off selling that 285 and getting a single 970 than going 285 cfx
     
  9. ---TK---

    ---TK--- Guest

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    Sure if you can clock the cpu to around 6ghz or so. A single 970 like eclap suggested is a much better option.
     

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