Real Power Consumption
eXtreme Power Supply Calculator is the most accurate PC power consumption calculator available and is trusted by computer enthusiasts, PC hardware and power supply manufacturers across the Globe.
Are you building a modern gaming PC, low power HTPC media server, or maybe you need to figure out power requirements for a rack in a data center? We've got you covered - eXtreme PSU Calculator will help you to select a suitable power supply unit and even Uninterruptible Power Supply (UPS) for your system.
Video Card Overclock
Basic version of the eXtreme Power Supply Calculator allows users to quickly estimate power consumption with minimal selection of PC parts.
On the other hand, our Expert, more advanced version of the PSU Calculator greatly extends the ability to select various PC parts and components, adds CPU and highly anticipated Graphics card overclocking!