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Depends on your workload. If sized correctly, everything will stay in RAM

^This. We have 15GB WC disks and 4GB pagefiles, which work for us, but our W10 desktop is pretty vanilla (O365, Teams, OneDrive, Edge, some minor LOB apps; PVS).

we used a 0.5gb RAM cache

Use a monitoring solutions who can monitor the usage of the ram cache. Start with a catalog with enough cache and see how much users use

I don't really see the point of PageFile anymore, unless you need a dump for MS, or don't have enough Ram. Educate me if I am wrong on my thinking lol.