580X Vs Vega 48 in the real world?

Discussion in 'iMac' started by Loa, Apr 1, 2019.

  1. Loa macrumors 68000

    Loa

    Joined:
    May 5, 2003
    Location:
    Québec
    #1
    Hello,

    Which kinds of apps will see the most differences between these two GPUs?

    (I do some photoshop work and some gaming (WoW)).

    Thanks.

    Loa
     
  2. Benz63amg macrumors 68030

    Benz63amg

    Joined:
    Oct 17, 2010
    #2
    I’d like to know the answer to this as well, is the 580x considered a high end powerful video card? I ask because that’s the card Apple includes in the expensive $2299 27 inch iMac configuration.
     
  3. kaintxu macrumors regular

    Joined:
    Jul 9, 2018
    #3
    the 580 is far from being a High end powerful video car. At most I Would say it's a mid tier, but I would even adventure to say its performance is lower mid tier, being below a 1060 with the vega 48 being between the 1060 and the 1070.

    I could be wrong as I'm far from an expert
     
  4. jerwin, Apr 1, 2019
    Last edited: Apr 1, 2019

    jerwin macrumors 68020

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    Jun 13, 2015
    #4
    Adobe Lightroom can use a neural network to enhance details.

    https://www.engadget.com/2019/02/12/adobe-lightroom-cc-ai-enhance-details/

    https://www.pugetsystems.com/labs/a...C-2019-Enhanced-Details-GPU-Performance-1366/

    Note that the Vega 64 is up there with the RTX 2080Ti.

    AMD says the Radeon Pro 580 is theoretically capable of 5.5 TFLOPS (FP32). But the Vega cards can use half precision floats (FP16), which happen to be the datatype of choice in AI.

    No firm numbers on the Vega 48 used in the macs, unfortunately.

    But Tech powerup lists a PC Vega 48 card that performs like this:

    FP16 (half) performance: 15.97 TFlops
    FP32 (float) performance: 7.987 TFlops
    FP64 (double) performance: 499.2 GFlops
    so, even if the floating point performance of a iMac's Vega48 is merely comparable to a 580(X), and if Adobe uses FP16 instructions,-- it'll be twice as fast when enhancing the details using AI.

    If you don't use lightroom, I can't point to a photoshop specific use case atm.
     
  5. SkiHound2 macrumors regular

    Joined:
    Jul 15, 2018
    #5
    This I find really interesting and it's kind of the first test that's tipping me toward a vega. Conventional wisdom has been that PS and LR use gpus in a pretty limited way and that once you have a decent gpu, higher end gpus add little or nothing to the mix. One could imagine we'll see much more of this kind of stuff appearing in photo editing software.
     
  6. Loa thread starter macrumors 68000

    Loa

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    #6
    I'm eager to see real world results pitting two iMacs against each other.

    And, yes, I'm only using PS, not LR...

    Loa
     
  7. jerwin macrumors 68020

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    #7
    https://macperformanceguide.com/blog-2019-04.html#20190401_1214-ReaderComment-iMac5K2019 offers a different perspective
     
  8. Cashmonee macrumors 65816

    Cashmonee

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    May 27, 2006
    #8
    To be clear, while the Vega 64 is not too far behind the RTX 2080Ti in the test you link to, the two cards are not in the same league overall. The 2080Ti is a far better and more capable card. The Vega 64 competes more closely with a vanilla GTX 1080 or RTX 2070.
     
  9. Loa thread starter macrumors 68000

    Loa

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    #9
    Very pertinent insight. You just saved me the upgrade price of a vega card!
     
  10. brokeneck macrumors member

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    Boston, MA
    #10
  11. jerwin macrumors 68020

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    Jun 13, 2015
    #11
    and if "lloyd" was really into SSDs, OWC would have a product that fit that bill too.
     
  12. fathergll macrumors 65816

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    Sep 3, 2014
    #12
    I read the Vega 48 is basically a slightly more powerful 1060... not even halfway between the 1070 and 1060.
     
  13. kaintxu macrumors regular

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    Jul 9, 2018
    #13
    based on Geekbench results for Open CL:

    580X: 119K
    1060: 127k
    Vega 48: 141K
    1070: 158K

    For me, that sits right in the middle of those 2. maybe 5% closer to the 1060, but I would call it middle point. There are other numbers and it seems to point to the middle ground.
     
  14. macduke macrumors G4

    macduke

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    #14
    From the benchmarks I’ve seen in games so far on my Vega 48 vs. a 1060 and a 1070, I would say this is accurate. It’s okay. I could get about 48fps in older games like The Division on 1440p ultimate settings. For newer games like Shadow of the Tomb Raider I got about the same at 47fps on 1440p but on high setting (not highest/ultimate/whatever). Oddly, adjusting to medium setting only raised the FPS by 1 to 48 so idk what is going on with that. Maybe thermally limited beyond a certain point?
     
  15. kaintxu macrumors regular

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    Jul 9, 2018
    #15
    That's quite helpful. In other game you can actually see the change when reducing the quality.

    To be honest, 48fps on high for a modern game is quite decent knowing the limitations of whay you are buying and not being a gaming pc. It does seem that it won't age well and that 3 yeras down the line we will most probably need an eGPU or just suck it. But if you take into account I have been gaming until last year with my 2011 6970M I think I should be able to manage as long as the vega 48 holds for a while.

    eGPU are damn big, take lot's of space I don't have and it's more cables running around, which is exactly what I try to avoid by getting an AIO. At that point, I might as well buy a PC as while I preffer MacOS, I'm not restricted to it, so... most probably Vega 48 it is
     
  16. macduke macrumors G4

    macduke

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    #16
    Yeah, if I'm running into issues in 2-3 years I might just build a more compact (relatively speaking) gaming PC. Something that can fit a full size Nvidia card, but is otherwise fairly compact without a bunch of drive bays using blade SSDs. I might tuck it away in a large storage closet that I have so it's not noisy. I've seen these ethernet display extenders and I think they have cat 7 ones now that support 4K over 10Gbps so I could run that over my ceiling and down the wall and cut out a box for it behind my desk. Kinda wish I had wired up ethernet when I built my studio last summer but I didn't think I needed it. Also I bet it won't be long before I'll have 4K 120Hz and 10Gbps won't cut it anyway.
     
  17. escargot3 macrumors newbie

    Joined:
    Oct 22, 2013
    #17
    Does anybody know of any gaming benchmarks directly comparing the 580X to the Vega 48 in the new iMacs? I would love to see these and have been patiently waiting...
     
  18. Loa thread starter macrumors 68000

    Loa

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    #18
    We're all waiting on Barefeats.com for those gaming benchmarks!
     
  19. kaintxu macrumors regular

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    Jul 9, 2018
    #19
    is it normal to take so long? It's been like +3 weeks?
     
  20. jerwin macrumors 68020

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    Jun 13, 2015
    #20
    "In this test, we're going to compare the i9 with Vega 48 versus the i5 with 570x".
     
  21. Loa thread starter macrumors 68000

    Loa

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    #21
    Haha! Hope not! Let's keep the other variables constant!
     
  22. bondavi macrumors newbie

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    Apr 4, 2019
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    Sacramento, CA
    #22
    Unboxed my i9 and ran benchmarks, also my old 2017.

    2017: i5 3.8 32GB, 2TB Fusion, Radeon 580
    2019: i9 3.6 40GB, 512 SSD, Radeon 580X

    Geekbench:
    2017: 5136/16587
    2019: 6366/34308
    OpenCL Score: 119722/118202

    Heaven Benchmark:
    See below.

    Have only had system powered up for 20 minutes. But basically same GPU performance.
     

    Attached Files:

  23. CWallace macrumors 603

    CWallace

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    #23
  24. bondavi macrumors newbie

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    Apr 4, 2019
    Location:
    Sacramento, CA
    #24
    I would like to add that the 2017 580 reached a max of 86 degrees whereas the 2019 580X never exceeded 70 during Heaven benchmarks.
     
  25. kaintxu macrumors regular

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    Jul 9, 2018
    #25
    Thanks for this. Could you please run Heaven on Windows? I'm colecting data and creating a topic for guidelines. If you could do a run under windows for each one OpenGL and one for Direct3D11 that would be great
     

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