Modern FANLESS Cpu?

Hey folks,

I'm looking to build a very quiet and cheap little box to do nothing more than simply serve/NAS. But, looking over a lot of hardware, it seems everything short of old CPU's have fans. I really don't need so much muscle to power such a box, but finding old chips that didn't require fans are either more expensive than a modern chip, or require also a bad old motherboard that doesn't support PCI/PCIe/SATA standards of today, which make it pointless. So I'm trying to find a cpu that is modern and can run fanless. I've had someone tell me to simply underclock a chip, big time, to then not need a fan, but even if I could do that, I have no idea how much I'd have to underclock it run it fanless and stable for extended amounts of time.

So I seek thoughts from others.

Fanless modern CPU possible? A cheap $40 dualcore AMD chip underclocked with no fan? Thoughts?

Very best,

get a INtel Celeron Dual Core E1200 and that shall do the work nicely!!