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in an interview raja koduri had alluded that nvidia's software and hardware are joined at the hip, so the hardware is often designed keeping in mind the software specs, its likely thats going to be the case with the rtx 50 series as well, some kind of an rtx 50 exclusive frameworkDLSS 4 might work but -50% performance on the 40 series, so you upgrade to a 50 series.