This benchmark seems to be either out dated or somewhat falsified. I ran the same benchmark on my system and CI out performed Yii ( https://github.com/JosephMoniz/BlueElephant/blob/master/docs... ) . The main point though is that with or without caching (APC) CakePHP is the slowest by an order of magnitude.

EDIT: yeah, pretty sure the original Yii benchmark is dated as the graph has older versions while the phpmark repo has slighlty newer ones ( http://code.google.com/p/phpmark/source/browse/#svn/trunk )

http://www.phpkode.com another PHP Framework source