http://www.eurogamer.net/articles/digitalfoundry-2014-assassins-creed-unity-face-off
"However, bearing in mind the lofty recommend specs suggested, it is possible to get a console-beating experience on relatively modest hardware. We paired a Core i3 4130 with a GTX 750 Ti, set PC presets to console equivalents (though we swapped in HBAO+ for a bit of a quality boost) and ran at 1600x900 (900p). In essence we pitted console-level PC tech against PS4 and Xbox One and found that the game ran fairly well. We locked frame-rate to 30fps using Riva Tuner Statistics Server and, cut-scene stutters aside, frame-rates held up in 26-30fps territory. Not absolutely perfect, but a slight cut above the Xbox One experience. Replacing the GTX 750 Ti with a GTX 760 allowed us to raise resolution to 1080p"
Les PS4/One en PLS par une GTX750ti

J'suis mort bordel 
"meuh meuh l'optimisation !!"
Les meumeutrons en larmes. 