Dell precision T3500 - works great.

[W4RH34D]

Got this thing off of ebay.
Remember those 6 core xeon beasts that came out a while ago?  They're dirt cheap now.

3.33Ghz, 12gb of ram.  Runs like a dream.  My old core2 I think couldn't really keep up.  Avahi actually works now (I didn't know it didn't) but with this machine it will warn me my hostname is already in use when I switch between subnets. (Friggin cool!)

Anyway, thought I'd share.

Speedstep and c-states work (atleast they appear to be) and it will downclock to about 1.5ghz for most of the time.

Very quiet and not hot in the least.

I threw an HP (rebranded intel) quad nic in there as well.

[W4RH34D]

Well right before a workout I had no internet connection.  After making my way through the house to my horror this machine was loop rebooting.

I just started a diet and let's just say my mind isn't 100% atm.

Anyway - I reconfigured an access point to be a router while I went to the closet and pulled an old machine off the shelf.
I took the same quad nic that was in the t3500 and put it in the "shelf" computer.  I loaded the lastest iso cd of Pfsesnse and with a usb stick including the /conf/config.xml the pfsense rig was up and running literally within 10 minutes.

Gave me time to figure out that the t3500's PSU died.
Something to note about this particular computer is it doesn't require a proprietary PSU and I slammed in something I had in a closet. (cooler master 750)  Works great!

Yes it's a mess in there - I was in a hurry!