2.5D Displacement

Is it real to make displacement in Cycles like in octane or corona render for less memory usage?
There are a lot of cases I can do in Octane with displacement, and can’t do the same with Cycles, because - out of memory. But I like Cycles, i want to do all in it.

Is 2.5d displacement for cycles in development? In plans? Is it real for cycles?


i have the same question, it seems octane can render displacement without modify the real geometry, but Cycles need very density subdivision to have acceptable result.
what’s the technical difference?