AMD on YouTube shared a video that offers a bit of detail on their usage of 'V-Cache' on the pending Zen 3+ CPUs. 3D V-Cache (stacking technology). 3D V-Cache was demonstrated and talked about at Computex in the form of a prototype Ryzen 9 5900X 12-core CPU.
That cache adds 64 MB of L3 cache to each core complex (each 8-cores) almost tripling the amount of L3 cache available for the CPU. This should help pout with game performance, as was mentioned. See below the video.
"We Bring Up: Dr. Lisa Su’s keynote at Computex 2021 and discuss AMD’s breakthrough in 3D Chiplet Technology, including why vertical stacking is used and how AMD bonds their chips together."
