picoPsu, really strong enough?

I keep hearing on other forums, that you must get a high watt psu! something over 350, 500 is best.

otherwise you seriously risk frying your boards.

now I am not gamer, but they said, doesn't matter.
if you are building a system with i3 or A6, 8, with 4-8gs ram, and powering at least 2TB with an ssd,
you seriously need over 350w!

I would love a small fanless, silent picopsu, but everyone I ask about, says, My system will fry in the first couple days!

I want to build a small HTPC with a A6-5400, 4g ram, ssd, and 1 TB 5400 2.5" for storage.
case is still pending depending on pico..

so will my system fry?

not planning on gaming, but let's just say for argument sake, I wanted to play skyrim on low settings for a couple hours..
just for argument sake..

thanks,,

ohh build is used for XBMC, you tube, chrome internet surfing, skype, thanks..