Actually less powerful than the 360. It has a single power pc core very similar to that of the 3 cores in the 360. It then has 8 companion cores, except each of these is a mere fraction of the performance of the main core. It's literally a puny microcontroller (tiny miniaturised very weak processors you'll find in things like TV remotes and such) that does nothing but handle interaction with controllers, turn another that does nothing but buffer audio, and another that does nothing but networking. You can't easily repurpose the companion cores for anything and they were notoriously difficult to work with and very different from any normal architecture which is why most cross platform titles were frankly a bit shit on PS3 and often lagged pretty bad. PS3 exclusives were ok as they could be designed around that chip in first place --- Post updated --- Ps4 and Xbox one, both suffer miserable single thread thanks to apu, but reasonable overall thanks to 8 cores. Single thread blocks beamng though.
