The Maxwell-based version should be the most power-efficient but it's unclear which of the two has the best raw performance. Both models feature up to 2GB GDDR5 memory, a 128-bit memory bus and 5000MHz memory clockspeed. The Kepler-based GTX 860M has 1152 cores and a 797MHz clockspeed whereas the Maxwell-based variant has 640 cores clocked at 1029MHz. The GeForce GTX 8 stream processors, up to 4GB GDDR5 memory, a 256-bit memory bus, 954MHz base clock and 5000MHz memory, whereas the GTX 870M has 1344 stream processors, up to 3GB GDDR5 on a 192-bit memory bus, 941MHz core and 5000MHz memory. Not only are we bringing faster GPUs to the table, we are also introducing a whole new set of killer features designed specifically for notebook gamers.

This year, we are changing the way we define progress for gaming notebooks. But let’s be honest, these kinds of performance increases come with each new generation of notebook GPU. And we have again unseated ourselves for “world’s fastest notebook GPU” crown. They deliver the usually double digit jumps in performance of 30%, 40% and in some cases even 60% year on year. Nvidia announced the GeForce 800M top to bottom line-up of new notebook GPUs.

Geforce gtx 860m 2gb titanfall 2