I don't think thats the same problem...
but I will say.. get gfxCardStatus and monitor your GPU usage... because I've had a few times where my Intel GPU would get stuck on and never switch over to the nvidia... Reboots sometimes fixes that when it happens... always fixes it if I've Cmd+Opt+P+R on reboot.
Actually it's the same issue. Gfxcarstatus confirms that 650M is used. As I said, I have the same issue here.
I'm hoping for a fix via Apple soon. This SMC resetting is quite annoying.