The 390X shouldn't be compared to a 970. Compare the 970 to a 390. The 390X is about $50-$100 more than the 390 and offers about 1-10 FPS more. Anyway, to answer your question: in 1080p between the 970 and the 390 (without the X) the 970 wins but in 1440p the 390 wins, but since you said you won't be playing in 1440 go with the 970.