Question What PSU Wattage is good?

Scott_130

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Dec 29, 2016
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Hello so my mate has a PC but he is upgrading the i5 7400 and his GTX 970. He has 12GB Ram, 2 Hard drives and an SSD, A lot of USB Devices and a 500w PSU. He will need to upgrade it but can anyone reccomend what wattage he needs?
The parts he will be getting is an I5 7700, RTX 2070.
Thanks
Sorry for bad English