When i try to calculate my PC's power consumption with OuterVision Power Supply Calculator it shows a value of 230 Watts.
But when i calculate it by hand i get this:
CPU(E8400):60W
GPU(R7 240): 30W
RAM(2*2GB):10W
HDD(Sata 7200):10W
Motherboard: 30W
4*USB2.0 : 10W
In total i get 150W.
Which one is correct? Why there is so much diffrence between them? Btw i need to calculate it because i have a 300W, 80+ power supply. And i want to upgrade.