I have a NFS server that is a old mini-itx motherboard with two 2.5" drives and a no optical drive.
Atm. this is powered by a external 100W psu, but I estimate it only need/uses between 60-80W. This old 100W psu is about to die on me (won't always power on), so I have replaced it with a spare 300W psu I had laying around.
So, what i'm asking is: Will a 300W psu drain more power than a 100W if the system only uses ~80W?
I'm guessing that there is no difference, but I know to litte about electronics to be sure :)