Anyone have any recommendations for motherboards / Zen 3 CPU combos that support both PCIE 4.0 (Gen4) and 128 GB of RAM?
Do the newest Ryzen chips support 128 GB or do you need to go to Threadrippers / Epycs for that?
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This site says that the Ryzen 9 5900x supports up to 128GB -- I'll have to verify.