Also interested thing I found out when I was checking Corsair PSU's.
Analog versions have very long passive operation curve that goes even up to 70% PSU load until it starts the fan. Where digital versions (ending with an "i") usually fire up the fan at only 20-30% PSU load. Digital is supposedly better since power delivery is more accurate and all but damn, that turned me off quite badly. Analog units can run in absolute silence to almost full load. If you care about noise, this is very important factor.
Don't know how it is with other PSU makers, but I think they behave the same...
Analog versions have very long passive operation curve that goes even up to 70% PSU load until it starts the fan. Where digital versions (ending with an "i") usually fire up the fan at only 20-30% PSU load. Digital is supposedly better since power delivery is more accurate and all but damn, that turned me off quite badly. Analog units can run in absolute silence to almost full load. If you care about noise, this is very important factor.
Don't know how it is with other PSU makers, but I think they behave the same...