Windows 8 downclocks CPU in games

Discussion in 'Windows, Linux & Others on the Mac' started by OUTofPRINT, Jul 20, 2013.

  1. OUTofPRINT macrumors newbie

    Joined:
    Jul 8, 2009
    #1
    It's a 15" rMBP with a 2.3 GHz i7 and a GT 650m.

    I was looking at the task manager while playing games, and it appears that the CPU is getting downclocked significantly. This has a large effect on the performance of the games, and I don't know how to fix it. I originally noticed it in Black Mesa, but I just saw it in Skyrim too. It makes the framerate drop a lot and makes it really stuttery/choppy. it usually drops down to around 1.2 GHz, but I saw it go down to about 0.7 GHz in Skyrim. Does anybody have any ideas on how to fix this?

    I already tried changing the processor power management settings.
    I'm using Lubbo's Fan Control to keep the fans on 100%
    I'm running it off a Thunderbolt external hard drive, if that matters.

    Any suggestions?
     
  2. Mr. Retrofire macrumors 601

    Mr. Retrofire

    Joined:
    Mar 2, 2010
    Location:
    www.emiliana.cl/en
    #2
    Intel Turbo Boost reduces the CPU-core clock rate, if a CPU-core reaches a certain temperature. The solution is a) better cooling or b) use a real game machine, not a weak rMBP.
     
  3. yfnew macrumors newbie

    Joined:
    Jul 26, 2012
    #3
    For me, I can use ThrottleStop to stop the CPU downclocking in bootcamp. However, after I stopped the CPU throttling, I found that my GPU started downclocking and throttling (from 900MHz to 240MHz)... Tried the Nvidia Inspector but it didn't help at all:( The next thing I'll do is probably to install Windows 8 in EFI mode and see if it helps. If not, I'll just simply go to the Apple Store and have a logic board replacement:( (you know what, this is already the second mac I have that has GPU issue. My MBP 2010 had blackscreen issue in bootcamp and sometimes in Mac OS X)
     
  4. chrono1081 macrumors 604

    chrono1081

    Joined:
    Jan 26, 2008
    Location:
    Isla Nublar
    #4
    Weak? Hardly.

    Sure its not the ideal gaming device but its an incredibly fast machine. I use a few of them as Realflow Render nodes at work.
     

Share This Page