A comparison is useless at the moment.What is the performance differences between 10.9 and 10.10?
I can only comment on the graphics department (not gaming) on the overall UI "fluidity"... Comparing a 2010 15" MBP running on nVidia GT 330m and a mid-2012 MacBook Air with Intel HD4000...
The MacBook Pro with dedicated graphics failed miserably... Choppy animations far worse than it has on Mavericks... Looks like old Apple hardware no longer have Apple's love of new OS anymore...
Snow Leopard and Mountain Lion still run decently...
Apple beta releases often have poor support for older machines, especially early in the release sequence (e.g. now). As final release gets closer, this should improve. If it doesn't, file bug reports.
Speaking as a developer, it's simpler to support current shipping machines first, then work one's way backwards through the list of non-shipping machines. Near-future machines are also pretty high on the priority list, i.e. machines under development that have not yet shipped.
What is the performance differences between 10.9 and 10.10?
What is the performance differences between 10.9 and 10.10?
A bit pointless considering Yosemite is only at Developer Preview 1 and Mavericks is on 10.9.3. You can't really compare the two.
For what it's worth though, Yosemite runs quite well on my Early-2011 MBP, apart from a few graphical glitches.
Mavericks ran fine during the DPs also, and has been buttery smooth since final release.
Yosemite is stil in beta, probably with debug enable. Anyway It runs 3d games faster than Mavericks, it depends on what graphic card but i've noticed quite an improvement, and if you read online most testers have seen a 10-20 fps increase in modern games (a lot) like Diablo 3.
What card do you have? I have the 750m (w/ 1GB of GDDR5 VRAM).
750M will get a nice boost, check online forums. I've tried on both Iris and D500 and both are faster in benchmarks and games.
Yosemite is stil in beta, probably with debug enable. Anyway It runs 3d games faster than Mavericks, it depends on what graphic card but i've noticed quite an improvement, and if you read online most testers have seen a 10-20 fps increase in modern games (a lot) like Diablo 3.
I see a HUGE improvement in Diablo 3 on my high-end 2012 iMac (GTX 680MX). The difference is just ridiculous. I just went from Mavericks to Yosemite DP6 and it's hilarious how much better the game runs.
how much?
Enough to be noticeable, but not enough to make me stop using Windows 7 Bootcamp to play..
Macs are simply not good enough for gaming unless you're not picky at all. When you compare running Windows, it's not even close..
What is the performance differences between 10.9 and 10.10?
There is absolutely no way to compare performance at the moment.
You can never compare performance on beta software because optimizations are usually not put in place and the OS will be slower in general with the debug code most likely still in it.
I never said it was fair
If people were noticing increased performance in the beta of 10.10 over 10.9, then that really says that the final build will be a lot faster. That was all I was asking for.