How much do yo think my current build needs, my current one is 850 watts. Here is my build, https://pcpartpicker.com/user/Guled/saved/vQJmP6. I also found a semi silver+ certified 1000 watts for the same price, (it's 80 dollars off!). Also would I pay more for a 1000 watt power supply then a 850 watt power supply if I'm using like 790 watts. I'm asking this question because I have a 430 dollar graphics card and a very expensive CPU. I saved up for over 4 years and don't want to get a bad power supply or make my parents pay too much for the electric bill.