I don't know of anyway to measure this myself because the only way i can think of is using a power meter to see if the its using more wattage than certified for but i don't own suck tool. My problem is i get low fps for my gtx 1080 lower than expected my normal fps on Fortnite is 100-130 fps all on low settings or high settings and when I see streamers setups with the same gpu they get way higher fps like 200-240 fps. I know that my CPU is not a bottleneck because I have an I5 8600k. With ram I added an other 4gbs so i have 12 now which helps by a ton. bottom-line is should I upgrade my psu to a higher wattage to something like this: https://www.amazon.com/gp/product/B017HA3SQ8 I don't want to spend any money on this but is seems to be an issue so if I have solid evidence from you guys I will buy it today. by the way my current psu is this one https://www.newegg.com/Product/Product.aspx?Item=9SIA68V21E0644 so when I upgrade i will miss the silence I mean I've never heard the psu at all since I've had it
thanks for trying to help me with my issue