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Nvidia 8600M GT / 8600GT / GTS FPS increase for WoW ( World of Warcraft ) & other games

troyWe have seen so many posts on forums and websites complaining about low FPS in games. Personally I found the FPS in 25 man raids in WOW to be really bad. After a lot of research I have finally found the reason why the graphic card performance was so bad. This article should help you fix this problem.

Most new Nvidia graphic cards have a feature called PowerMizer that reduces the clock speed of the graphic card in order to save power.

“NVIDIA® PowerMizer® technology is an intelligent power management solution available on all NVIDIA graphics processing units (GPUs) that can effectively extend battery life and reduce wasted power – all while providing performance on demand even while plugged in the wall.”

While this is supposed to help with power management, it actually slows down the GPU while playing games after a few minutes. Ever noticed that games start off good and then FPS drops ? This is the reason. It underclocks the GPU, now that is something we dont want while gaming.

TechPowerUp GPU-Z

This program while show you the GPU core clock and the GPU memory clock. Dont get worried you dont have to know much about it. Run the program before starting the game and then watch it after a few min into the game. This is what you will probably see.

GPU underclocking

Notice the GPU is working slower, thus the slower FPS. We need to disable PowerMizer. This is explained in the next section.

How to disable PowerMizer

Download PowerMizer. Run the program as an administrator in Vista. Disable PowerMizer and restart the computer. Enjoy !


If you want to do registry editing manually, you can find a tutorial here.

Now if you arent planning to run games for a long time you could turn PowerMizer back on to save battery.

Please remember to leave a comment here if this helps you !

Nvidia 8600M GT / 8600GT / GTS FPS increase for WoW ( World of Warcraft ) & other games
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  • Anjali

    Pease help me…some one hack my gmail a/c…& nw he has changd my password so how can I get it back…
    he has made a/c on orkut on my name & with my id..
    so plz plz help me to short out this problem…
    My hack id is [email protected]
    Plese help me…

  • @Anjali
    Thanks for the comment, you left the comment on an unrelated post, nevertheless this link should answer your question.

    How to get back a hacked gmail account/

  • Zachary

    Awesome! Finally an actual solution to my problem

  • Kostas

    Hi i bought my graphic card 2 moonths ago wich is GeForce GTS 450 was playing world of warcraft just fine with high resolution, well about 2 weeks ago i cant even have 30 fps in game and if i move they are much lower so i can only chat now in game and nithig else :(
    I tried this PowerMizer thing but it didnt helped but maybe im doing something else what do you mean when you say “Run the program as an administrator”?? oh and i have windows 7 ultimate not vista..