motherboard and gpu

Solution
x2 - yes, you should be ok. The i3 only draws 50-60watts, the GTX 1060 only draws 100-120 watts. Add in some overhead for HDDS (20w), motherboard/ram (50w) and a few fans (20w) and you're only worst case 270ish watts assuming you have everything running full tilt. Actually, that puts you right in the sweet spot of the efficiency curve for a 500-600w PSU (50% load).

Rookie_MIB

Distinguished
It might be set up to where you need to change a setting in the BIOS to use the external graphics card. Usually under the graphics section - if your CPU has the default set to use the IGP only - you may need to set it to see if there is PCIe graphics card (each BIOS might have it labelled differently so read the manual).
 

Rookie_MIB

Distinguished
x2 - yes, you should be ok. The i3 only draws 50-60watts, the GTX 1060 only draws 100-120 watts. Add in some overhead for HDDS (20w), motherboard/ram (50w) and a few fans (20w) and you're only worst case 270ish watts assuming you have everything running full tilt. Actually, that puts you right in the sweet spot of the efficiency curve for a 500-600w PSU (50% load).
 
Solution