Which PSU or how many Watts for an HTPC?


Going down the completely silent route....with that AMD processor I wouldn't be comfortable with anything less than a 150W pico.
 
Is there any way to calculate it?

Processor 100W Thermal Design Power
Mobo 10W Typical
SDD 5W Typical
RAM 10W Typical
Margin 25W (for future additions, in this case limited to a hard drive or two no dedicated graphics card(s))

In this case the processor is the largest consumer by far. Not having a dedicated graphics card(s) is a big saver.
 
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