Frankly, I wouldn't consider anything less than a 1080Ti to be viable for 4k in Elite: Dangerous, unless you aren't playing Horizons content, or are willing to sacrifice other aspects of IQ for resolution.
Of course, this a matter of personal preference and some people are quite happy with what I would consider a flatly intolerable experience.
Of course, this a matter of personal preference and some people are quite happy with what I would consider a flatly intolerable experience.