Yes, it's generally fine for CCD1 to be active during sleep while gaming. It helps maintain focus and awareness.
Yes, it's generally fine for CCD1 to be active during sleep while gaming. It helps maintain focus and awareness.
This behavior is typical. On the 7950X3D, CCD1 is active during sleep while CCD0 handles most tasks even with BIOS set to auto cache instead of preferred cores. Performance drops slightly but remains stable, and it runs smoothly at 1440p with a smooth frame rate.
The 7950X3D features a hybrid CCD layout, with one containing the 3d-vcache and the other not. Running both active during gaming means the non-3d-vcache CCD must interact with the 3d-vcache, which isn't too severe—though some latency will occur, especially since AMD uses tile-based CPUs rather than Intel's monolithic ones. It also needs to talk directly to the 3d-vcache, which will be much slower for the non-3d-vcache version, potentially hurting performance. However, I believe both CCDs can perform well under heavy multithreaded tasks, even if it means dealing with some communication overhead, because more cores will compensate for that issue.
while using cinebench both ccds function properly and they hit clock speeds of 4.95 on one and nearly 4.8 on the other. in games only a single ccd is active, which seems to be more suited for performance gains. likely these 3d cpus are designed with cache optimization in mind, especially when bios enables preferential caching. Thanks!