Are you using an AMD Ryzen X3D CPU with 3D V-Cache?
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AMD Shares New Second-Gen 3D V-Cache Chiplet Details, up to
Official] AMD Ryzen DDR4 24/7 Memory Stability Thread, Page 1116
Cores are not getting parked / Is 3d cache working ? 7900x3d : r
The 7900X3D with V-Cache from AMD: Instructions Required?
Official] AMD Ryzen DDR4 24/7 Memory Stability Thread, Page 1116
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Introducing AMD Ryzen 7000 Series Processors with 3D V-Cache
AMD Shows prototype Ryzen with 3D V-CACHE - Game Perf up 15%