The GTX 980 came out last year ( http://m.hardocp.com/article/2014/09/18/nvidia_maxwell_gpu_geforce_gtx_980_video_card_review/1#.VZrOJfk4TG8 ) and you are going back even farther in time then want it to last 3 years.
I'm hearing screams and yelps from The Witcher III crowd as even the 980 chugs along.
To get that many years you may have to skip to the higher end of cards from this link:
Hello guys , I am new to this forum , I've already asked this question on LinusTechTips, Tom's Hardware and Tek Syndicate forums , and got different opinions , some people said that the R9 390 is better because of the VRam and that in 1 or 2 years the GTX 970 will struggle because of the 3.5 + 0.5 ram that it has , while others said that at 1080p the GTX 970 will last 3 years and that the Vram won't be a problem . I know there are a lot of people asking this lately , so I am sorry if this is kinda annoying. I am planning to buy a new gaming PC this month , but I can't decide what GPU to get between the R9 390 and GTX 970 . I am planning to play games at 1080p , and I know they're very similar in performance , and since I would get the MSI version for both of them , I would like to OC them (Even though I haven't OCed anything before ) , as I know the 970 is a better OCer than the 390 . But my biggest concern is that the R9 390 will pull ahead with better drivers and the higher amount of VRam in the future , as I plan to keep the card for 3 years , and I fear that the 3.5 gb out of 4 that are used at maximum speed of the 970 won't be enough in the future ? What do you think ?