How many servers?

[MadJawa]

Hi,

I'm considering bying a server to host some TF2/CS:S/DOD:S servers. Here are the specs:
CPU : Intel Core 2 Duo E6550 (2x2,33GHz)
RAM : 4GB DDR2
HDD : 750GB SATA2
Connection : 100Mbps (unlimited traffic)

So I wanted to know how many servers I could host, because I want to do some cheap server hosting and I want to know if I can get enough money to make a little profit.

Thanks in advance
MadJawa