Sorry if I wasn't very clear.Are you asking about the GPU's lifespan, or whether the card would be able to play graphic demanding AAA games in future as well ?? That's a good card for 1080p.
But the Performance will all depend on TYPE of PC game you are playing. Also, which CPU do you have ? Soem games demand a stronger GPU, instead of a CPU, and vice versa.
The answer I was looking for was how long it would be able to play graphically demanding AAA games in the future.