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I did a clean install, wiped everything off, no restoring from backups. It's butter smooth and for some reason, all the GUI animations are very very fluid, locked solid FPS.

I believe LION is to windows vista as Mountain Lion is to Windows 7's level of improvement. It's very very smooth and stable.

Just the animations; even inside imessage app when incoming messages scroll in, it's super butter smooth.
 
Mountain Lion's experience is very smooth for me. We all knew that Apple would upgrade the graphics under-the-hood quartz components in Mountain Lion, but I wouldn't believe I would notice a difference until I saw the performance of docking/undocking tabs from safari and Xcode, resizing windows, scrolling any kind of scroll view in OS X... everything seems snappier. Gives my 3 year old Macbook Pro some more life span!

Also, I think that something happened in the fonts... they somehow seem prettier... Could just be me, though.
 
I did a clean install, wiped everything off, no restoring from backups. It's butter smooth and for some reason, all the GUI animations are very very fluid, locked solid FPS.

I believe LION is to windows vista as Mountain Lion is to Windows 7's level of improvement. It's very very smooth and stable.

Just the animations; even inside imessage app when incoming messages scroll in, it's super butter smooth.

You're system is "smoother" because you did a clean install and removed crap and clutter that was bogging your system down.
 
Yes....Yes....and....Yes.

Much smoother than Lion. Where you will find the most improvement is with Safari. Much faster.
 
I did upgrade to ML, feels roughly the same, benchmarks are LOWER though. Went from 8203 in Geekbench to roughly 8000. Cinebench: OpenGL from 40 to 35. 2011 iMac 21,5" with 24 GB RAM.
 
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I did upgrade to ML, feels roughly the same, benchmarks are LOWER though. Went from 8203 in Geekbench to roughly 8000. Cinebench: OpenGL from 40 to 35. 2011 iMac 21,5" with 24 GB RAM.

me to same. I tested ML with NovaBench and i got 30fps in graphics test. Under Lion it was 57 fps.

Macbook pro early 2011 13'
 
Lion was slightly faster than SL and ML is around the same as Lion on my two machines. But the new Safari scrolling is much much faster. Cinebench or Geekbench results don't really matter. They can drop and increase from OS to OS and even inbetween point updates. Look at actual performance always. Lion had much better GPU drivers than SL so games ran better. But the cinebench results didn't differ.
 
ML seems to have an improved standard memory allocator, geekbench memory scores are significantly faster. But other scores were slightly lower, so the end score was virtually the same. I have no idea why integer ops etc. should be slower with ML as OS should not affect that. That on a 2009 C2D MBP. Maybe it had something to do with me running ML from an external USB enclosure as opposed to the internal SSD with Lion.

Other then that, the system felt lightning fast. ML Safari is really really snappy. I like the new animations :)
 
Yes, benchmark scores are not really a valid sign of real performance, but I was still surprised at the GPU drop. But I guess it's a GM of 10.8.0 anyway.
 
I'll have to test NovaBench but I played Diablo 3 on 10.8 last night and it played fine, granted it was on all lows.. the FPS counter unfortunately is broken.
 
Lion gave me significantly better benchmark scores than Snow Leopard but it felt a lot of slower in actual use. I wouldn't pay any attention to benchmarks unless you're concerned about gaming.
 
I'll have to test NovaBench but I played Diablo 3 on 10.8 last night and it played fine, granted it was on all lows.. the FPS counter unfortunately is broken.

I'm running D3 on 10.7.4 and the FPS counter is broke; its not an OS issue, its an issue with one of the recent D3 patches I think.
 
Lion gave me significantly better benchmark scores than Snow Leopard but it felt a lot of slower in actual use. I wouldn't pay any attention to benchmarks unless you're concerned about gaming.
And if you're using benchmarks for gaming, it better be by someone using the game in question to benchmark the system.

Due to OpenGL improvements in Lion, graphic intensive games tended to be better off under Lion. I hope that the same is true for Mountain Lion in terms of OpenGL performance.
 
I'm on a Late Model 2008 MBP with 8GB of ram and a 256GB SSD and it is much faster then Lion was.

This was my experience as well! But I was using a hyrbrid drive by seagate and it was way faster in my opinion. At least dp4 was (others builds were good but not as good). It honestly made my macbook feel more fresh and snappier.
 
All performance snappier, but general graphics performance in the OS is much much improved on my 2011 MacBook Air.
 
ML is much faster and snappier than lion on my system but comp works at higher tempratures and I hear fans ramp up. Maybe they will fix this.

I will definitely buy ml.

Yes, lion was windows vista and ml is win 7.
 
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