Gaming: Which version of iMac

Discussion in 'iMac' started by iLikeMySelf, Jul 29, 2010.

  1. iLikeMySelf macrumors member

    Apr 4, 2010
    Hello everyone,
    So today is my birthday and my present is an iMac (since I have the intel white iMac that needs an upgrade).
    I wanted to use my iMac as a gaming machine (although I do not really know which games I will play since I have a PS3).
    Which model should I choose? Thank you.
  2. TMRaven macrumors 68020


    Nov 5, 2009
    The model with the best gpu will perform the best-- in this case, the highest end iMac with the advertised 5750 gpu.
  3. iLikeMySelf thread starter macrumors member

    Apr 4, 2010
    Does the processor and the screen size affect the performance?
  4. panzer06 macrumors 68030


    Sep 23, 2006
    If 1920x1080 works w/o looking fuzzy I like the high end 27". I have the 24" with 4850 and it runs most games under Win7 quite well.

    I also wonder how well SC2 will run at native res on the new 27...

  5. TMRaven macrumors 68020


    Nov 5, 2009
    The difference between 1920x1080 and 2560x1440 on windows is only 6-10 fps. (35fps vs 30fps when everything is maxed out, spare portraits to 2d)
    On osx however, the same settings at 2560x1440 resolution is only 5fps, while 1920x1080 is 25fps.

    So I could see why everybody on the forum always seems to jump the gun on 2560x1440 absolutely killing gpu performance, but it seems to be only true on osx when it comes to resolution-- windows side is unaffected. Those numbers tell me that the drivers under osx have a hard time dealing with the allocation and bandwidth of gpu's vram.

    I also happen to think 1920x1080 does look fuzzy on 27". That's just me tho.

    A lot of stuff on starcraft2 are ran by the cpu, and yes, the cpu will affect performance. The lynnfields are rated as the best gaming cpus for the iMac line at the moment.
  6. diegobgr macrumors 6502

    Nov 22, 2009
    Due to high resolution of 27", I will say 21,5" high-end.
  7. /V\acpower macrumors 6502a

    Jul 31, 2007
    Don't listen to this.

    The 27' iMac is way more decent for gaming.

    And anyway, if you play in 1920x1080 window instead of fullscreen is will be almost the exact size as the 21.5 screen and then it will have better performance.

    There is absolutely no way i would buy the 21.5 to play games.
  8. tommyav macrumors newbie

    Jul 28, 2010
    received a imac 21.5 i3 3.2 yesterday 5670 graphics. just been playing crysis in 1080p all high settings. No slowdown experienced and looks amazing. Will post a video over the weekend when i get chance.
  9. opera57 macrumors 6502

    Feb 15, 2009
    If gaming it will probably be best to go for the high end 27" with the i5 or i7 if you want it to be remotely future proof! [​IMG]
  10. cluthz macrumors 68040


    Jun 15, 2004
    Strange, most gaming sites report the desktop 5670 to gain a measly 15 FPS running Crysis at that resolution. To get decent FPS (35-40) you need a 5850 or a nvidia 285. I don't have Crysis myself, but seems like only the 256-bit cards manage to get decent FPS in Crysis. The 5770 desktop is the fastest 128 bit card around, and it seems to be getting around 25-30 FPS at 1080p.

    Sure you haven't turned down some shadows and AA?
  11. DesmoPilot macrumors 65816

    Feb 18, 2008
    Don't get an iMac for gaming (unless you're planning on playing older games). Video card offerings on the iMacs are lackluster (especially considering the resolution of the screens, and who wants to play a game on an LCD not at native resolution?).
  12. JordanNZ macrumors 6502a

    Apr 29, 2004
    Auckland, New Zealand
    I'd hardly call the 5850 mobility "lackluster"... Sure, its not a desktop card, but as far as mobility cards go. It's hardly rubbish.
  13. pt0016 macrumors regular


    Jul 9, 2010
    =O, are you sure? That would be awesome if it were true...
  14. DesmoPilot macrumors 65816

    Feb 18, 2008
    Not rubbish, just lackluster considering the resolution of the screens.
  15. TMRaven macrumors 68020


    Nov 5, 2009
    From my experiences with games like dirt2, sc2 and mw2, I havn't found the extra resolution to be that hampering.
  16. tommyav macrumors newbie

    Jul 28, 2010
    Hi, I was playing it last night and it seemed fine to me. Will post the video today and have a play around with the settings. Don't get me wrong it's not blazing fast but fine if you want to play the odd game. If you wanted a ultimate gaming machine you wouldn't buy a Mac anyways!!!!
  17. tommyav macrumors newbie

    Jul 28, 2010
    Also, I've never played this game before so only on the first level. Maybe it won't play so well later if the levels get more graphic dependent.

    As promised i've posted some footage of crysis running at 1080p with high settings for all except shadows which is medium. It does not make much difference to the overall look though.

    link below.

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