If the 490 Keeps ddr5 as well, then makes me wonder about the performance. looking at benchmarks the 390x peforms 15-25 frames above the 380x.
http://www.guru3d.com/articles-pages...review,20.html
I wonder if the 490 will be the same. The 380x msrp was 239, the 390x was 429 (I am using the X verisions since no 490x's have been confirmed).
If they keep similar pricing the 490 would have to be a killer card to compete with the non ref 1070 at 379. It would have to either undercut the price and be within performance, rival the 1080 for cheaper, or sit between the 1070 and 1080 in terms of price and performance.