Dijkgraaf - 10:29 pm on Feb 1, 2012 (gmt 0)
It would depend on a multitude of factors.
The amount of RAM on the database server
The amount of free space on the hard drive(s)
The speed of the hard drive(s).
The size of the database(s).
The number & speed of the CPU's.
Then there is also the database design itself.
The size of the records (too large and it goes over 2 pages).
The creation and use of appropriate indexes.
So in short, there is no simple answer and you would be advised to do some load testing in an environment as similar as possible to your production one to find out.