It is very very fast. I'm not 100 percent sure but I know overall my system was using close to 5gb with just SU and Podium 64 running. It really takes advantages of as many CPU threads as possible, It is still going to be limited by SU in terms of geometry it can handle and I tried rendering a scene that had over 1 million polys worth of 3d plants and it just couldn't handle it which isn't a big deal I just replaced one component with a 2d plant and it dropped the model down 90% and rendered quick. For a quick one click in SU solution it is pretty good. I'm getting into Thea for more complex stuff.
R