Here's some good reading about how far a 450w PSU can go with mid-range gaming cards... https://www.gamersnexus.net/guides/3036-how-far-can-450w-get-you-for-a-gaming-pc-wattage

There are some interesting stats in there about CPU power draw too. For something like a GTX 1060, 450w PSU seems like it has plenty of headroom, depending on the rating (most of these tests assume you have at least a Gold rated PSU). So for your upgrade, I think you'll be fine without a new PSU.

Sorry for suggesting otherwise in my earlier post. The only reason it concerns me when people have a PSU under 540w Gold rated is because I once had a GTX 780ti running on a 450w PSU and it fried my card when it died. My fault for not paying attention to the power consumption specifications, but that was years ago.

______________________________________

My Store
My Free Models
My Video Tutorials
My CG Animations
Instagram: @luxxeon3d
Facebook: https://www.facebook.com/luxxeon