If you were worried that slick new 12-pin PCIe power connector on NVIDIA’s new GeForce RTX 3090 and GeForce RTX 3080 Founders Edition graphics card required a new PSU — fear not.
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A new diagram from NVIDIA shows you that you do not need a new PSU, as the new GeForce RTX 3090 and RTX 3080 Founders Edition graphics cards will include a 12-pin to dual 8-pin PCIe adapter in the box. You will not need a new PSU though.
Warning: do not attempt to use a single 8-pin PCIe power connector into the dual 8-pin to 12-pin adapter, you will require both of them connected in order to power the card up.