Gamers Nexus has done some tests. The I7 and I9's seem to be doing better, with the caveat that they consume power like CS consumes alcohol. They really seem to blow AMD out of the water though when it comes to stuff like rendering and compiling.
DDR5 though is fuck all expensive, and hard to find right now. So if you go with a DDR4 motherboard with the new Intel CPU's and want to go DDR5 when things are more normalized in price and availability, you'll need to replace your motherboard as well.