I haven't thought of this before, ORMs probably use 2-3x as much memory as regular structs/dicts. I've started using only the query builder in all my side projects and I've had a good experience so far.
yes, not just the memory... for models with lots of fields, in Python+Django, the time overhead of instantiating these complex heavyweight objects can really add up if you have a whole 'page' of them
I always figured the main overhead was doing I/O with the db, but in these cases it's not always so
