Its a side grade or tiny bit faster than the 970.
However I dont think its worth paying for the 8gb version.
This card is ment for 1080p only (you wont need 8gb for that).
***** NOTE: in DX12 games its usually faster than the 970. (the future isnt DX11).
A 199$ this card is still a fantastic buy in terms of value.
Its also more future proof than buying a 970.