6490m Performance Tips + Overclocking

Discussion in 'MacBook Pro' started by buchanan1, May 30, 2011.

  1. buchanan1, May 30, 2011
    Last edited: May 30, 2011

    buchanan1 macrumors newbie

    May 30, 2011
    Hi All,
    I recently purchased a 15" 2011 MBP, however was very disapointed by the 6490m - hardly an upgrade from the HD3000.

    The majority of 2010/2011 games are only playable at a decent framerate at 1024 x 768, something I don't feel is acceptable from a "high end" system.

    So I set out to try improve the performance of this GPU in any way possible, and would like to share the results in the hope that it might help other people.

    All of these tips are for Windows.

    1. Update the Radeon drivers
    The bootcamp driver is quite old (11.2), and the "normal" Catalyst drivers report unsupported hardware.

    Use the ATI Hotfix drivers to update to 11.5b, which offers performance boosts for many games.


    2. Overclock the 6490m slightly
    Firstly, download and install Rivatuner


    Navigate to C:\Program Files\RivaTuner and open RivaTuner.cfg

    Look for the section marked [GPU_1002], you will see a subsection called RV770 - add the text without quotes "6760h" to the end of this line.

    It should look like this now

    RV770 = 9440h-9443h,944Ch,6760h

    Save and run RivaTuner, click on the arrow next to "Customize", then click on the picture of a graphics card.

    Click "Enable Low Level Overclocking" and when asked, click "detect".

    Now use the sliders to adjust the core/memory frequencies, I managed 928/986MHz respectively.

    So, how did this impact performance? Well, playing "Witcher 2" at low settings at 1280 x 768 gave me 5-20 FPS outdoors. The overclock boosted this to a **consistant** +20FPS.

    Crysis 2 at medium settings 1024 x 768 medium settings, is giving me 30 - 50 FPS (using the advanced graphics config tool to remove MSAA and Ansiotropy).

    Not perfect, but a more enjoyable experience!

    Stabilitywise, it's been fine...I've haven't noticed much extra heat but this system does get hot quickly in Windows.

    Goes without saying but the overclock is at your own risk, etc, etc.
  2. Satnam1989 macrumors 65816

    Nov 16, 2011
    Has anyone over clocked this GPU since this guys post? I have installed the lastest Driver on my Bootcamp Win7, wondering if ATI tray tools can be used to overclock this GPU a little for tiny bit better performance for a few part time games?

    Please dont reply "ur laptop isnt good enough" or some next level negative bs, if you have something valuable to share regaring the topic then please do so and only if you have performed it thank you.
  3. bill-p macrumors 68000

    Jul 23, 2011
    I haven't tried ATI Tool yet, but RivaTuner works well. I was able to push mine further, though. Up to 1000MHz GPU and 1100MHz Mem respectively.

    There doesn't seem to be any heating problem. The GPU hits a max of 80C when the computer is on a pillow.

    Crysis 2 runs at low 25fps to more than 30fps at 1280 x 800 now.
    Skyrim can be completely maxed out on Ultra, but shadows can only go up to High, and texture quality has to be reduced to Medium because 256MB VRAM is just not enough.
    StarCraft 2 also runs 30fps min to 55fps average on High settings at 1440 x 900 with Medium quality texture.

    I think overclocking helps with shader-intensive games, but when the roof is hit (I'd say the roof is around 1000MHz GPU), VRAM would be the limiting factor.

    Will try ATI Tool in a bit and let you know how it goes.
  4. bill-p macrumors 68000

    Jul 23, 2011
    Well, it seems ATI Tray Tools works even better!

    Just follow the same steps outlined in the 6750M overclocking thread's first post, and you'll be up and running in no time.

    I was able to undervolt the Radeon HD 6490M and overclock it at the same time, which resulted in even lower temps. The GPU now barely breaks over 70C on flat surface or 80C on my bed, but it runs 33% faster in everything!

    I'm now a happy camper at GPU 880MHz and MEM 1050MHz at 0.955v.
  5. wesley98, Dec 26, 2011
    Last edited: Jan 17, 2012

    wesley98 macrumors newbie

    Dec 26, 2011
  6. usmanyo macrumors newbie

    Feb 8, 2012
    rivatuner problem

    Hello guys, i have the HP probook 4530s with the 6490m in it. As mentioned above i followed all the steps and ran RIVATUNER, but it gives me an error message that Warning! RivaTuner has not been tested with the currently installed display adapter". however i am able to tweak the settings, but have experiences crashes while playing games. Is that happening due to this error message?
    Thank you
  7. scrmtrey macrumors regular


    Mar 28, 2013
    -MBP 15 early 2011
    -Riva tuner
    -Catalyst beta 13.5
    -Windows 7 64bit SP1

    And i cannot adjust overclocking setting , it just show the fan control tab.

    Any idea, help ?
  8. RedRed99 macrumors newbie

    Nov 15, 2011

    Hey I had the same problem. What you need to do is uninstall beta 13.5 and get 11.5b hotfix instead. Then it works.
  9. scrmtrey macrumors regular


    Mar 28, 2013
    Yes but than u are not using the latest driver which are better in performance and other things.

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