AMD Explains Why No Dual 3D V-Cache CPUs: Cost and Limited Gaming Benefit

Following the reveal of the AMD Ryzen 7 9800X3D and the subsequent introductions of the Ryzen 9 9900X3D and Ryzen 9 9950X3D at CES 2025, a key detail emerged: only one of the CCDs (Core Complex Dies) on these dual-CCD models is equipped with the additional 3D V-Cache. This has raised questions about why AMD doesn't include 3D V-Cache on both CCDs, a topic that has been on the minds of many since the Ryzen 7000X3D series. The Question of Dual 3D V-Cache With the launch of the Ryzen 7000X3D series, users and experts alike questioned why AMD didn't extend the 3D V-Cache technology to both CCDs in processors with dual CCD configurations. While it was known that AMD had internally tested such a solution, a clear explanation was never officially provided. Scheduling and Infinity Fabric Latency A crucial factor involves scheduling—ensuring that game threads run on the Zen 5 cores with the additional cache. Furthermore, these threads should stay on these cores (or this specific CCD) to a…