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Intel’s Z790 motherboards will add support for PCIe Gen 5 M.2 SSDs but just like AMD’s AM5 platform, not all motherboards will have it. It looks like only the top-tier motherboards (premium offerings) will carry Gen 5 M.2 support whereas the mainstream line will not utilize PCIe Gen 5.0 due to the higher costs that come from adding more PCB layers and redrivers for Gen 5 hardware.
Watch the video on Moore’s Law Is Dead Channel for full details.