Hi,
I have just installed an via epia ve5000. Has an 500 mhz
processor without fans. I added an realtek cheapo pci nic.
E-smith 5.6 recognized the via stuff allright. I disabled all fancy stuff in the bios such as sound and usb and so on.
I installed it in a Via Sereniti 2000 Silver Case . Looks fancy and it cheap and fairly small.
However, if I would do this for an external firm or a customer I would take a bigger box to be able to cool the harddisk better. I have no idea if that is a real problem. I run a webserver on it so that is extra io (
www.bomengids.nl have a look at some trees there.)
I would advise you to use mondo to make them a fancy recover cd. With the right cd-player (lite-on works fine) you can set up a new clone box in 30 minutes or less.
http://www.ibiblio.org/pub/linux/distributions/smeserver/contribs/thaynes/E-Smith/mondoarchive/install.htm
The question you ask about megaherzes has a lot to do with the functionality you will be using.
If you use it as a mail server with user email postboxes on it with imap you can use the extra cpu power as well as disk-power.
If you only use it as firewall/ squid box the 800 mh is even over the top. For squid you just stick in
1 gig of memory and the disk will hardly be used.
I think disk io is more of a problem than cpu power.
I think 500 mh cpu will do fine for 15 users.
cheers
Hans-Cees