Hi all!
I've been toying around with the idea of getting Untangle setup on my end to replace my Tomato based router. I didn't really have a good reason to do it other than A. Geek-Drive and B. Spare parts laying around!
I've had the following parts laying around:
MSI Fuzzy RS690T mini-ITX Socket AM2/AM2+ board; has twin Marvel Gigabit NICs, two DDR2 SO-DIMM slots, a mini PCIe slot and a think PCI slot.
2 GB of Patriot DDR2-800 SO-DIMM module
An AMD Athlon 4450e low wattage dual core 2.3 GHz proc (45 watt)
Stock AMD Copper HSF
80 GB Fujitsu 2.5" SATA drive
Cheap Raidmax mini-ITX case with a 200 watt PSU
All together I'd estimate the cost to be $150.
I installed Untangle 64 bit on it and it runs like a charm!! Still getting used to it but man, it's a great little system. The Fuzzy board for AMD procs is rather rare - it never went into mainstream production but it's available online for absurd prices... I've snagged mine for $70 which is a steal however there are plenty other mini ITX boards out there for less.
For those of you who do not want to break the bank and have spare parts laying around - the system above should handle 100 or so users without breaking a sweat!