Protocol 3, Execute, maxrows to return, impact?

I was wondering, if there is any real advantage to actually specify say
64 for the maxrows parameter to the Execute message in the PostgreSQL
network protocol?

I.e.:
- Is it easier on the server, because it somehow uses less total memory when batching the Executes with 64 rows at a
time?
- Is it better for latency when expecting notices/notifies in between?
- Is it simply slowing down the protocol because every 64 rows I introduce a round-trip delay for the next
PortalSuspended/Executecombo?
 

Please note that we're only running the query once, I'm just batching
the results with the Execute maxrows parameter.
-- 
Sincerely,          Stephen R. van den Berg.

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