6970m 2gb v 5870

Discussion in 'Mac Pro' started by jetjaguar, May 3, 2011.

  1. jetjaguar macrumors 68030

    jetjaguar

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    #1
    just a quick question .. is the new gpu in the imac more powerful than the 5870 1gb for the mac pro ?
     
  2. Eidorian macrumors Penryn

    Eidorian

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  3. jetjaguar thread starter macrumors 68030

    jetjaguar

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    #3
    wow that is disappointing to hear .. so the imac has a more powerful gpu than anything available currently for the mac pro ?:(
     
  4. Garamond macrumors regular

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    #4
    Tests indicate that the Radeon HD 6970M shows an impressive performance. AMD's old top model, the Radeon HD 5870, is surpassed in every benchmark by about 50% – a testament to the new model's formidable performance. Even Nvidia's rugged GeForce GTX 480M winds up a whopping 33% behind the Radeon HD 6970M.
     
  5. jetjaguar thread starter macrumors 68030

    jetjaguar

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    #5
    wow so i guess the new top of the line imac is a great machine
     
  6. Garamond macrumors regular

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    #6
    It would seem so. Damn, it's almost so I regret my investment last year :eek:
     
  7. Transporteur macrumors 68030

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    #7
    The benchmarks you listed don't include the Radeon 5870. The 5870 they've got listed is the Mobility version, which doesn't even come close to the performance the desktop version offers.
     
  8. jetjaguar thread starter macrumors 68030

    jetjaguar

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    #8
    already making me regret my recent mac pro purchase:(
    after my 2010 i7 imac i swore i wasnt buying another one because of the hd noise etc but i dunno
     
  9. Garamond macrumors regular

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    #9
    I stand corrected. Luckily!
     
  10. jetjaguar thread starter macrumors 68030

    jetjaguar

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    #10
    thank god
     
  11. derbothaus macrumors 601

    derbothaus

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    #11
    Totally wrong. The 6970m is based on the 6850 architecture. A good 20-40% slower than a 5870. Would have been nice but like always, iMac is not equipped with "pro" or even "Gamer" graphics. The key is in the little "m". It is a mobile chip on a mobile logic board. iMac is a big laptop with a 3.5" HDD.
     
  12. ugru macrumors 6502

    ugru

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    #12
    From the GPU point of you are right, but concerning CPU performance the new iMac i7 should be on par with the 2010 Hex MacPro...
     
  13. derbothaus macrumors 601

    derbothaus

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    #13
    On par is relative. On single threads the 2600 beats the W3680. On heavily multi threaded the 6-core pulls ahead. In mixed environment it may be a wash with more wins for the 2600 ever so slightly. So yes., relatively, the iMac i7 will be as fast as the hex on paper. So win! But if you don't need expandability the iMac is a hell of a deal in price vs. performance.
     
  14. strausd macrumors 68030

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    #14
    Considering the 6970M has twice the amount of VRAM as the 5870, what difference, if any, does that make performance wise?
     
  15. derbothaus macrumors 601

    derbothaus

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    #15
    Larger buffer does not mean a faster card. Sometimes it may even decrease performance. Unless you are rocking 2560x1600 with 8XFSAA. Then the extra buffer will help. Games are all about shader speed and memory speed. The larger the screen the more memory you may need but a 512 MB card with fast core clocks can beat a 1GB card with lower shader performance. I'd much rather have 512GB DDR5 than 1GB DDR3 for example. Kinda stupid to offer a 2GB option on a card that can't push the 27" natively anyway regardless of memory. Pro apps could use the extra memory but if Apple was on point they would offer a 2GB Nvidia so we can actually use current GPGPU accelerations since most all the devs have sold out to CUDA.
     
  16. allupons macrumors member

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    #16
    I would guess the 2gb option is to enhance opencl which has been confirmed by apple to be included in at least fcp x.
     
  17. goMac macrumors 603

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    #17
    This is all pretty true. It's kind of like how adding RAM into a machine won't magically make it faster. It helps if you're using up the RAM you have, but if you aren't it's kind of a waste.

    I haven't ever seen a game which can even use more than 1 gig of VRAM.
     
  18. flipster macrumors 6502a

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    #18
    Last iMac had a 128mbit bandwidth, new one has a 256mbit bandwidth. It will help out a lot with the 2560x1440 resolution. And add the fact that everything else is faster, your looking at a 45% increase in speed over the old iMac's graphics card. All of the iMac's graphics cards are mobile. Every one of them ever released
     
  19. initialsBB macrumors 6502a

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    #19
    Wirelessly posted (iPhone: Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_2 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8H7 Safari/6533.18.5)

    I got the same feeling when I saw the new specs... But then realised I'm daft because 6*3.33 is a hell of a lot of power. Maybe the new top of the line iMac can play toe to toe in CPU but that's about it.

    I can't wait for the MacPro refresh, especially on the GPU side in regards of the iMac refresh.
     
  20. theSeb macrumors 604

    theSeb

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    #20
    Not quite. The iMac has a desktop CPU.
     
  21. gpzjock macrumors 6502a

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    #21
    The iMac has a mobility GFX card on it, 6970m is not a desktop card. http://www.notebookcheck.net/AMD-Radeon-HD-6970M.43077.0.html
    Based on a 6850 desktop card it is less capable than a 5870 Mac Pro version.
    If it was a 6970 proper the iMac would be 4" thicker or have cooling pipes sticking out the back. :D

    The i7 CPU in the iMac is a fantastic piece of kit though, look to the end of this year for Sandy Bridge Mac Pro loveliness to hammer it firmly back into line.
     
  22. strausd macrumors 68030

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    #22
    When does the AMD 7000 series come out? And how likely is it that Apple will use those in the next MP instead of a 6870?
     
  23. Cindori macrumors 68040

    Cindori

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    #23
    The AMD Radeon 7000 Series may come out as early as this summer.

    http://www.digitimes.com/news/a20110411PD227.html

    It might not be impossible to see it in the next MP, depending on when the Xeons are available.
     
  24. thermodynamic Suspended

    thermodynamic

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    #24
    That's GREAT news! (I do fractal creation, VMs, and some 3D rendering, so a desktop CPU's performance is going to be better. I don't need the highest end graphics, though Photoshop filters will make use of the extra VRAM. (e.g. PixelBender filters will use it). If the latest iMac is on par with the desktop 4870, I'm as happy as a kid in a candy shop.)
     
  25. thermodynamic Suspended

    thermodynamic

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    #25
    Good to know, thanks!

    (Still teetering my next desktop to be an iMac or Mac Pro, but that's next year to be sure...)
     

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