Calculate the recommended power supply wattage for desktop computer

If you are going to DIY build a desktop computer, you might be wondering how much wattage of power supply unit (PSU) should your computer use, that will be sufficient and not overkill.

In fact, you can calculate the recommended power supply wattage using the online eXtreme Power Supply Calculator, claimed to be "the only power supply calculator trusted by PSU manufacturers and computer enthusiasts".

Just click on either one of the links below:

• The default eXtreme PSU Calculator Lite
• Thermaltake Power Supply Calculator
• Cooler Master Power Supply Calculator

This handy tool will calculate the estimated power consumption based on information including the motherboard, CPU, video card, RAM, harddisk, disc drives, PCI cards, PCI Express cards, USB devices, fans, cooling system, etc.