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2010 13 MBP here, I got improvements all across the board. In SC2 I could run medium settings in Windows but in OSX it was unplayable when alot of things were going on(1-5fps) now I can play on medium with shadows disabled in the config files and never drop bellow 20. In Wow it almost doubled my performance in raids and dalaran. I went from dipping to the teens to over 30FPS!!
 
Just installed the update. There is definitely a performance increase on my mbp. However, Using default medium settings on starcraft 2 will cause the game to run at about 30-40 fps. I'll have to switch off shadows manually in the variables file to make it run at a comfortable 40-50fps, which still suffers a huge dip when I try to scan using terran's command centre. Not sure how it holds with 5 carriers. Also, weirdly, it seems to run at lower fps in the campaign stage I tried, Zero Hour. Not sure why, haven't tried other stages yet.

Overall, its a good start, which gives us hope for future driver updates for performance increases
 
just my two cents...

I have a 2007 Aluminum iMac 7,1

this update had a noticeable improvement for me on Portal and HL2.

That is all
 
that's weird, my fps gets choppy (~30) on certain maps, on medium settings and shadows turned off
 
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