 Mavericks, Apples latest version of Mac OS is very different in the way it conserves battery charge. Unless you do a lot of testing it would be hard to say how all of the new energy saving features impact battery life and by association graphical performance. That being said Apple has never had tweaky high performance drivers for their GPUS. They are biased to correctness and accuracy in their drivers. Without a system to play with I can't say for sure what is going on here. I fairly certain though that if you ran these systems side by side, that is a Mavericks machine and a Ubuntu machine, that the machine running Mavericks would last much longer. Let's face it Linux isn't a low power platform yet. Honestly it would be interesting to see if Michael could run a few tests to confirm my theory. Maybe run his benchmarking program until the battery dies a few times. Comment Post Cancel 