I do not think so, it can't even do 3d yet if I'm correct
PS3 or PS4?![]()
You are not. PS3 plays 3D blu-ray.
Not sure about 4K output on the PS3, though...
Unfortunately, not. Only PS4 and Xbox one can run 4k resolution videos but just videos though. Analysts do not think that neither of them is able to run game in 4k resolution.
Even if they could, developers are unlikely to support that kind of resolution anytime soon. (Heck, they seldom supported true 1080p last gen, and that was something a decent number of people actually had)