The (6+2)-pin PCIe connectors are designed to be able for using them as 6-pin or 8-pin connector depending on what you need.

The aim of this article is to help you better understand what power supply your computer may need depending on its most power-hungry component: the graphics card. The “Recommended PSU Wattage” value is for the whole system, not only for the graphics card/s.

All these recommendations are made by the staff of RealHardTech X and based on the best of our knowledge. We recommend, as an alternative source of useful information, that you use the following tool to estimate the approximate whole consumption of your computer.

eXtreme Power Supply Calculator (external link)