asterisk users - Jul 2013 - suggestions for low-power, small form-factor box with PCI and PCIe slots?

I'm replacing a home PBX with an Asterisk server that needs 2 Digium
cards (one PCI, one PCIe).  Right now I'm just using a spare desktop
machine, but it's overkill in terms of size/power/heat/noise/CPU
power.

Does anyone know any cost-effective alternatives?

-- 
Eric Cooper             e c c @ c m u . e d u

You could base your box on a motherboard with an onboard CPU (like Intel Atom).
The disadvantage
of these boards is that they usually come only with a single PCI or PCIe slot.
There are
industrial boards with different options, but they are rather expensive.

The idle power of Sandy/Ivy Bridge systems is not too much different, so a H61
board could be a
good choice, especially since you can use consumer components. I use server
boards with C20x
chipsets and a typical machine with 1 or 2 TDM cards has a total power
consumption of about
35-40W in idle state. Since you probably deal only with at most a handful
channels, a Celeron
G465 should more than sufficient. I also prefer small SSDs instead of a hard
disk. Let's say you
have a 40 GB disk and the operating system plus additional software occupies 3-5
GB, then 90% is
free which should result in a long life time since there is plenty of room for
wear leveling
optimizations.

jg