hi, im upgrading my gpu and im wondering which would be a better bang for the buck a evga gtx 1060 ftw or a evga gtx 1070 sc, the 1060 has a higher base and boost clock but the 1070 has far more cuda cores and a bit more vram, currently have a evga gtx 660 sc so either would be better, also i only play in 1080p if thats a concern, thanks very much