Re: refurbished tower server
Have a look on eBay. Most servers are rack mounted but I've seen a few tower systems. You do need to look though.
Re: refurbished tower server
If you're looking to just to run teamspeak - grab any tower machine (one built around that time period) and stick the OS on it.
You'll find even most non-server sold systems (e.g. home pcs) would be capable of running that stuff.
You may even get lucky and buy a small-form factor PC and be able to stick that stuff on - just look for something that had or has 2008 drivers available from the vendors.
Re: refurbished tower server
Got a couple of old hp quad core opteron machines here.
Depends what you want/need.
Re: refurbished tower server
Heck most anything will run that - I've gotten a few machines from the local town recycling center - patched them together and gave them to the neighborhood youngsters.
Re: refurbished tower server
If you want a cheap DC and TS server, silent and low power, build a cheap AM1 box.
Virtually all the servers I see being sold cheap are rack mount HPs....and have a minimum power draw of ~150w