There is a third variable: Apple is putting ram much closer to the CPU than AMD. This has the advantage that you get lower latency (and slightly higher bandwidt

There is a third variable: Apple is putting ram much closer to the CPU than AMD. This has the advantage that you get lower latency (and slightly higher bandwidth), but the downside that you're currently limited to 128gb of ram, compared to 2tb for threadripper (4tb for epic). Amd's 3d cache that they're launching in a few months will be interesting since it lets the L3 go up a ton.