Thank you for your quick response ..
But don't you think that r9 280x is little old. The power consumption is double compared to the gtx 960.
If thinking about AMD should I wait for the r9 300 series, which is releasing on the 18th of June ?
And I don't think so I would be going for sli config, as I have a 970 chip set based motherboard and I can't upgrade it now. I just got it 2 months ago