Here���s a screenshot on a 5K iMac.

Reading a �� retina �� pdf in background just to compare.

Ok it���s a bit pixelated but I can notice it only if I���m 20cm from the screen (usually I���m 60cm).

So perfectly usable. Of course retina support will give a sharper �� look �� but it���s not that important to me (to be honest I just realized it was pixelated when reading the post).

Cheers,

C��drik