gtx 970m vs gtx880m

[gmingpcali]

Hi, i want to know that which would be better? Gtx 970m (newer) or gtx 880m. I am not talking about gtx 980m which i know is better.

 

[k1114]

970m is better performance and uses less power. The 900 series is much more efficient.
http://www.notebookcheck.net/NVIDIA-GeForce-GTX-970M.126694.0.html