Maverick runs perfect on my entry level Late 2009 iMac 3.06GHz MBP with 12GB of RAM.
I started with Snow Leopard, upgraded to Lion, then Mountain Lion and now Maverick. It runs just as fine as always.
Does it run hotter? Mine does.It runs beautifully on my 2007 2.2GHz MBP with 4GB of RAM.
Is someone running Maverics on older machine? I have a MacBook Pro with 2.4 GHz Core 2 Duo CPU and 8 GB RAM. Maverics is optimized for the newer Intel CPUs. I wonder if the new OS will run on this old machine fluent and fast like the 10.6.8 i am currently using.