I can easily find proper power watt for combo of 13700k + 4080

or 13900k + 4090 ,

but I can’t find proper psu level for 14700k + 4080 (cause 14700k is newest one)

I heard that 14700k is similar with 13900k, so

does 850w is enough fot 14700k + 4080 combo?

or not enough?

Will coil whine appear when I go 850w?

should I buy 1000w?