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Meh, MSI is recommending 750 W on their website. I think I will be fine as the 3900X is hella power efficient. If I had an Intel, I'd be sweating though.



                  

PC Specs: CPU: 7800X3D || GPU: Strix 4090 || RAM: 32GB DDR5 6000 || Main SSD: WD 2TB SN850