Old news, but each CCD will apparently have 96MB of cache according to Tomshardware! Link here:
https://www.tomshardware.com/uk/new...mb-of-l3-cache-per-chip-15-gaming-improvement
That's 3 times the L3 cache of the 5800X. For an 8 core part, could be looking at a maximum of 44 watts for the interconnect and L3 cache (based on Humbug's earlier 14.8 watt figure for the power consumption of a 5800X's Cache +interconnect), for a 5800X equivalent with V-Cache.
It's likely to be less than this though, do to an interconnect with '3x the energy efficiency'.
If there's a 16 core part, the article mentions a total of 192MB L3 cache. Impressive if true.