Dual ATi 5770 Myth

Discussion in 'Mac Pro' started by DonMega, May 19, 2011.

  1. DonMega macrumors regular

    Jul 8, 2007

    I was in an Apple Retail store which shall remain nameless. I was asking about an upgrade from the OEM 5770 to the OEM 5870 and was ready to plunk down my money. The "Genius" that talked to told me that it would be a better buy to purchase another OEM 5770 because my 2010 Mac Pro would be able to use the processing power of that second card even though nothing is plugged into it.

    WHAT????? Is he thinking about Crossfire capability on a PC? Please tell me that this is a myth and this guy doesn't know what he's talking about. Or is this somehow true?

  2. Cindori macrumors 68040


    Jan 17, 2008
    perhaps he meant OpenCL

    but no, a single 5870 will be faster

    apple ppl usually dont know what they are talking bout
  3. interslicer macrumors member

    Oct 14, 2010
    as far as i know macs donnot support crossfire, and unlinked cards will provide no benefit to monitors not hooked directly to them.
  4. alust2013 macrumors 601


    Feb 6, 2010
    On the fence
    Yeah, OS X doesn't do crossfire. Not sure what that guy was thinking, but you were correct in your thought that the 5870 would be better. Sometimes people at the apple stores have no clue what they are talking about.
  5. DonMega thread starter macrumors regular

    Jul 8, 2007
    Thanks guys, I didn't think that was right. Okay, a corollary to that first question. My main apps are Aperture 3.x, Adobe CS (soon to be 5.5), and every now and then COD MW as a stress reliever :D. Will I really benefit on the production side? I know COD will but my main concern is Aperture and it's brushes and adjustments.

    Thanks in advance,

  6. DonMega thread starter macrumors regular

    Jul 8, 2007
    Ahh, the search function. I just found my answer. I'll stick with the 5770 for now.
  7. JeepGuy macrumors regular

    Sep 24, 2008
    Apple should rename this position to something else, so far I haven't run into anyone that deserves that title working at an apple store.
  8. TheAnalogue macrumors member


    May 12, 2011
    Clearwater, Fl
    Apple does have an option on the online store to configure a Mac Pro with 2 5770's. My understanding is that this simply doubles the number of displays, but not the graphics speed. Maybe he was referring to this.

    just my $0.02
  9. 100Years macrumors regular

    Mar 8, 2011
  10. seek3r macrumors 6502

    Aug 16, 2010
    Yeah... my bet is the "genius" heard part of the marketing spiel that Apple tells its retail staff about OpenCL and CUDA and never learned more about it. I remember trying to talk to a friend of a friend Apple Specialist about some CUDA work I was doing a bit ago and he had the same issue.

    As Cindori said Apple ppl usually don't know jack

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