R9 M290X vs R9 M295X

Discussion in 'iMac' started by sakabaro, May 18, 2015.

  1. sakabaro macrumors regular

    Joined:
    Feb 24, 2015
    #1
    I've read all the threads on the subject and I wonder if anyone has fresh news?

    I am concerned by the throttling issues with the M295X, and apparently the M290X seems to hold fine. Anyone can confirm/infirm this?

    I am going to do 50% OSX coding and 50% Win gaming, I don't mind burning a little more on the GPU, but I rather prefer a stable GPU than one which run too hot.
     
  2. fathergll macrumors 6502a

    Joined:
    Sep 3, 2014
    #2
    General consensus is don't get the M295X if the following applies to you;
    • Fan noise bothers you
    • You are worried about long term unknown effects of higher thermal temperatures.

    If neither apply then the M295X is mostly likely the best choice.
     
  3. sakabaro thread starter macrumors regular

    Joined:
    Feb 24, 2015
    #3
    Ok, thanks, it's what I feel too. It's kind of suck though to have monitor Temperature and clock rate, how well! Was planing to do a bit of Oculus Rift for fun but I guess I would have to pay attention.

    Anyone has benchmarks showing the performance of a throttling m295x against a non-throttling m290x under heavy load?
     
  4. fathergll macrumors 6502a

    Joined:
    Sep 3, 2014
    #4


    I'm not sure, probably buried in some thread. I believe the m295x is considered faster overall even when throttling.
     
  5. WilliamG macrumors G3

    Joined:
    Mar 29, 2008
    Location:
    Seattle
    #5
    And now there's the new M290 (no X) in the base 5K iMac refreshed today. :D
     
  6. sakabaro thread starter macrumors regular

    Joined:
    Feb 24, 2015
    #6
    Not really what I was hoping for, would rather see a NVidia chip coming back!
     
  7. WilliamG macrumors G3

    Joined:
    Mar 29, 2008
    Location:
    Seattle
    #7
    You/me/everyone in the world/literally.
     
  8. TechZeke macrumors 68020

    TechZeke

    Joined:
    Jul 29, 2012
    Location:
    Rialto, CA
    #8
    I'm really curious to see how the new M290 performs vs the M290X. Gotta love Apple and their random proprietary GPUs.

    I can just imagine when Apple goes to AMD or nVidia asking for a special GPU. "We need a GPU in between the GTX 980M and the GTX 975M. How about the GTX 977.5M or the 975MX?"
     
  9. MaciMac100 macrumors 6502

    Joined:
    Oct 26, 2014
    #9
    Not Apple. This way (amd) they can sell more AppleCare. Profit.

    Happy with my nvidia iMac...
     
  10. aevan macrumors 68000

    aevan

    Joined:
    Feb 5, 2015
    Location:
    Serbia
    #10
    I'm guessing it's just lower clocked. M290X on an iMac is, actually, clocked higher than the M290X in laptops, so, basically it's a desktop Radeon 7870 equivalent. On the other hand, M290 is, probably, clocked just like the 'regular' Laptop version. So, I'm guessing the difference should be anywhere from 5-10% at most.
     
  11. MrNomNoms macrumors 65816

    MrNomNoms

    Joined:
    Jan 25, 2011
    Location:
    Wellington, New Zealand
    #11
    They wouldn't by request but an OEM having chips left over that didn't meet the quality for the M290X so they're rebadged as M290. There are also quirks such as the 680MX which was part of the 600M series but had the newer architecture in. It is basically a way for OEM's to cut their losses or otherwise their GPU's would end up costing a lot more.
     
  12. loekf macrumors 6502

    loekf

    Joined:
    Mar 23, 2015
    Location:
    Nijmegen, The Netherlands
    #12
    About the m290x in my 5k iMac, I hardly hear any fans spinning. I tried a few demanding Handbrake and iFFMPEG transcoding jobs taking all four i5 cores and some GPU load, but things are very silent...
     

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