This online tool assists users in determining the appropriate power supply unit (PSU) for a computer build. It operates by allowing users to input their planned hardware components, such as the central processing unit (CPU), graphics processing unit (GPU), motherboard, memory, storage devices, and other peripherals. Based on the selected components, the application estimates the total power consumption of the system under typical and sometimes maximum load conditions.
Accurately estimating power requirements is critical for system stability, efficiency, and longevity. A sufficient PSU prevents system crashes due to insufficient power delivery, ensures the PSU operates within its optimal efficiency range (reducing energy waste), and avoids overstressing the PSU components, which can lead to premature failure. Prior to the widespread availability of such tools, calculating power needs often involved manually consulting component specifications and performing calculations, which was prone to error and time-consuming. The automation simplifies this process, making it more accessible to a wider range of users, including those with limited technical expertise.