Some papers about benchmarks

[Gianmarco]

Hi all. I have to prepare a little talk/presentation about the possibility of 
using FreeBSD in a productive enviroment instead of proprietary OS (windows 
:-).

I was looking on web to find some info/material/benchmarks about performances 
of FreeBSD/Linux/WinNt under the common server tasks (web, email, ftp and so 
on ...) . I have found a lot of things but not so much recent and mostly 
about Linux not FreeBSD. 

If someone can point out to some references or new benchmarks about our OS 
I'll be very happy. If there is nothing about FreeBSD also Linux/Unix 
material is happily accepted ...

Thanks ...

P.s.
Once I read in this area a link about a file which summarize the main 
differences about FreeBSD, Linux and Windog with little smiles. I got the 
file too, but I have not with me now. Will someone so kind to repost the link 
please. I tried also on the search page of FreeBSD but it seems out of work. 
Thanks again....