Just played on new Summoner's Rift. They weren't kidding when they said it could possibly run better than the old one. 60 FPS for the first time on SR is pure bliss.
Yea the Poly count is lower, so it is actually less intensive. (basically the tech was badly rigged before, now they can use less to repersent objects etc in the world space.) It looks really good and I am glad to hear it actually increases the performance lol.