• 1mVeryH4ppy@alien.topB
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    1 year ago

    It requires PCIe bifurcation to work which I believe most mid to low end motherboards don’t support.

    • Berengal@alien.topB
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      1 year ago

      I don’t think Intel supports anything other than 8x/8x on 12th gen and newer on any MB. AMD should support 4x/4x/4x/4x and 8x/4x/4x on the primary slot on any AM5 CPU and I think most AM4 CPUs too regardless of MB. Although I guess the MB manufacturer could disable that functionality if they really wanted.

      • benjiro3000@alien.topB
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        1 year ago

        AMD should support 4x/4x/4x/4x and 8x/4x/4x on the primary slot on any AM5 CPU and I think most AM4 CPUs too regardless of MB.

        AMD is 4x/4x/4x/4x for the all desktop CPUs EXCEPT the G (laptop) series. Those are 8x/4x/4x (and always with a lower pcie version).

        AND it also depends on the motherboard manufacture because some do not implements 4x/4x/4x/4x. Forgot what board it was.

        Intel 1700 is 8x/8x for sure. Alderlake and successors are hard coded in the CPUs to this. Sucks!

        • You want great idle power consumption => Intel, but you lose ECC and 4x/4x/4x/4x bifurcation. Yes, there are workstation boards that have ECC but the price alone is, just get a PCIe card with a active lane splitter chip for NVME. Your probably cheaper.
        • You want ECC and 4x/4x/4x/4x => AMD but you eat around 15W higher power draw from the wall (chiplet issue).
        • You want low power AMD? => G series but then no ECC and only 8x/4x/4x OR you need to find the insane overpriced XX50G PRO versions for ECC support but same bifurcation issue. And the lower pcie issue will be there.

        There is no, “does it all” solution.

        • madn3ss795@alien.topB
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          1 year ago

          AMD’s support depends on the motherboard. My B550 board support all 3 modes (8x/8x, 8x/4x/4x and 4x/4x/4x/4x).