MB Asus Z170 Maximus Hero VIII
CPU Intelcore I7 6700
Kingston 16GB (2x8GB) DDR4 2666MHz Fury
GPU EVGA 1070 FTW  (Folding)
3x 3Tb HD
1 blu ray
USB printer and scanner
and some times 2 USB disk and Esata disk
what size and model of PSU do I need for this?
 
Sven Åke

storbacken29
MB Asus Z170 Maximus Hero VIII
CPU Intelcore I7 6700
Kingston 16GB (2x8GB) DDR4 2666MHz Fury
GPU EVGA 1070 FTW  (Folding)
3x 3Tb HD
1 blu ray
USB printer and scanner
and some times 2 USB disk and Esata disk
what size and model of PSU do I need for this?
 
Sven Åke

http://www.coolermaster.com/power-supply-calculator/

Check out the EVGA Power Meter page. Plug in your specs, and it will suggest a proper PSU for your build. 

Thanks I will look on this pages
 
Sven Åke

You can use the EVGA Power Meter, or the OuterVision Power Supply Calculator for a more detailed estimate of your overall system requirement..You might also want to read the EVGA Power Supply Buyer's Guide and the Power Supply FAQs at JonnyGURU before you decide..Make sure the unit has enough connectors for all your hardware..Units with an ECO/Semi-Fanless Mode are nice because they operate in a quiet fanless mode during low load/temperature.

Ps, Say your average load usage is 300w, then double this for your psu wattage of choice.