[HyperDB] Multiple database connections?

[Martin Zvarík]

Hi,
I have not inspected the HyperDB code nor used it, but if I am just 
logically thinking...
If I have articles in database #1 and comments in database #2 --- isn't 
it slower to have it in several servers and databases (using HyperDB) in 
comparison to one DB, one server? (this question is a result from 
experiencing that connection to database server takes time)

If you find this question irrelevant please reply anyway, I'd like to 
catch on on this.

Thank you,
Martin