I'm Using Revit Architecture 2013, after I open a VERY simple 5MB project in revit, it starts to eat up my memory starting from 300+ MB up to 7~9 GB in just one hour of very simple work, and finally slows to a drag and crashes reporting I'm low on my system memory. I've seen other threads pointing at 20xfile size memory usage by revit, but that is not my case because the total amount of files i opened were 20 MB, thus needs a 400+MB memory, but revit gets over 7 and up to 9 GB.
I'm on Windows 7 Ultimate 64 with core i7 laptop
With 16GB RAM
NVIDIA GeForce GT 540M
to see how the memory is used up, look at these task manager snapshots taken every 15 minutes working on two files, one 5 MB and the othe 15 MB:
then after some 40 minutes, without opening any new or large files:
there's a copy of the journal files attached
BTW I'm an expert Autocad User, But A rookie in Revit.