Title says it all... I am looking for an Nvidia GPU miner for OSX. I've got a 2012 MBP i7 with Nvidia 650m, would prefer to mine without using Windows or Linux.
You might use Tsiv's miner here: https://github.com/tsiv/ccminer-cryptonight/releases but you will have to build it from source. I don't see any OSX binaries available.
You could mine using https://github.com/tsiv/ccminer-cryptonight/releases But on a MBP with NVIDIA 650M, I wouldn't recommend it to you, since you will break your hardware sooner than you could imagine. A standard notebook is not designed to run it's GPU or CPU on 100% all the time. Really.
Nevertheless the hash rate of the integrated graphics is really not worth trying.