Overclocking m395x

Discussion in 'iMac' started by iemcj, Nov 11, 2015.

  1. iemcj macrumors 6502

    iemcj

    Joined:
    Oct 31, 2015
    #1
    Anyone had any luck with this yet? Have Battlefront coming out next week and getting my system prepped. I haven't been able to get the amd catalyst software to let me do any overclocking though. I'm wondering is it just not possible with this graphics card? I've looked around online but couldn't find anyone who has but I don't blame them cuz it's a pretty new system. If anyones had any luck with overlocking a retina imac just let me know, thanks!
     
  2. cynics macrumors G3

    Joined:
    Jan 8, 2012
    #2
    Unfortunately I can't help you with your question too much since I don't game extensively enough to consider overclocking plus I don't use bootcamp.

    However I have to ask, if it was possible do you think that would be a wise idea with the temps the graphic cards already reach? Seems like you'd just end up seeing throttling.
     
  3. Samuelsan2001 macrumors 603

    Joined:
    Oct 24, 2013
    #3
    As mentioned above there are a few reasons that the cards aren't overclocked thermals being the main one, there is no way to upgrade your cooling so they will just heat up and throttle back quicker if you overclock it providing no benefit.
    They are mobile cards as well and as such aren't designed with overclocking in mind at all, to be honest if this is what you are into I can't see why you bought an iMac instead of a watercooled PC.
     
  4. jgo78 macrumors 6502

    Joined:
    Nov 11, 2008
    #4
    i don't think u want to overclock this card considering mine has hit 97c in just a few minutes of gaming
     
  5. desmond2046 macrumors regular

    desmond2046

    Joined:
    Jun 2, 2015
    Location:
    Columbus, OH, United States
    #5
    The most important difference between the mobile version and the desktop version of the GPU is the thermal design.

    For most desktop GPUs, if the GPU runs too hot, the system will increase the fan speed and cool the GPU down. If you want better performance and doesn't care about the fan noise and TDP, you could overclock it. The fan will run faster and the GPU consumes more power, but you get better performance.

    However, due to the TDP limitation and the size of the fan, the mobile GPU cannot increase the fan speed over a certain limit. Therefore the GPU will decrease its clock speed to cool itself. The performance difference between a desktop GPU and its mobile counterpart is usually determined by the thermal design. It makes no sense to overclock a mobile GPU, since it will be throttled anyway when reaching certain temperature.
     
  6. iemcj, Nov 12, 2015
    Last edited: Nov 12, 2015

    iemcj thread starter macrumors 6502

    iemcj

    Joined:
    Oct 31, 2015
    #6
    Well thank you for actually answering the question, it's annoying how people feel the need to comment on something when they don't actually have any information to offer other than their opinions that weren't asked for. ;)

    To answer the question on why I didn't buy a liquid cooled pc, I need to be in osx for business. I won't add to the cliche of "creative people use macs", but in my case I already have thousands of dollars invested in programs that I would need to rebuy if I went over to the windows world. I've peaked into the dark necromancy world of Hackintosh and it looks quite problematic. Don't get me wrong, I'd TOTALLY return this imac and do the hackintosh thing if I got the same reliability and better performance for a better price. Just seems crazy complex from what I've researcehd?

    I was curious on the possibility of overclocking the gpu to get better performance out of gaming. I've already spent quite a bit of time gaming already and heating has NOT been an issue at all, I've kept a careful eye on it and the cpu has never went above 70c, haven't looked at what the gpu was doing but I woulda noticed if it was getting to the throttling point. Oh well, I spent more time looking online and no one was able to overclock the m295x of last year so doubt it's possible on this one. Thanks Desmond!
     

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