How Many Watts Pc Power Supply. How many Watts does your power supply need. PCI cards external devices USB and FireWire devices cooling fans and other components may need more power.
A power supply thats only 70 efficient on the other hand will pull 428 watts of power from the wall. Your PC is likely using abot 300w under load. You can also look at the PSU module or the user manual.
So a 600W power supply can distribute UP TO 600 watts to the PCs components.
Some can do just fine dropping down to 450 watts and others need to go a bit higher to between 600 and 650 Watts but it seems as though 500 and 550 watts is the sweet spot for most hardcore gamers. This tool will help you select a suitable power supply unit for your system. For example a Bronze Rated power supply. Most fridges use a good 200w.
