I'm considering buying a new laptop, but I'm still not quite sure to go for the 980M, or just stick with a 970M. The price difference is 380€, so quite much.

But will the 980M perhaps give me longevity for 1-2 years, whereas I would need to buy a new laptop again, due to the 970M being obsolete earlier?? Then the 380€ extra would of course make sense.

Considering also that the mobile versions of the GPUs are less powerful, a 970M doesn't come close to a 970 desktop version GPU.

Screen is just a FullHD 1920x1080 IPS, so no 4k.