xendenn wrote: I found a primergy tx120 s3p server. Anyone use ? Do you think it will be ok?
I would rather suggest something like this: Allegro Offer number: 9450728514
This proposal has a double power supply (power consumption), but you can look for something else with a "normal" single power supply.
I`m more interested in showing you what it looks like inside - a passive processor, the case itself without a fan.
And an additional question is where you will keep it in terms of climatic conditions (room, living room, basement, attic, etc.) - this is a passive server, but they work in a strictly defined environment, which in such a case is created in the server room itself (temperature, air humidity) - in this case, you do not have to worry about heat exchange because air circulation is maintained in the server room itself.
To conclude - I would not go for completely passive solutions, but leave some possibility of installing a fan, at least on the casing. A 12 or 14 cm valve does not spin as terribly fast as those rack jets.