If you have a Ryzen 9 CPU, whether that’s the 7900X or 9950X3D, chances are its core count was one of the biggest reasons you picked it over a Ryzen 7. After all, 12-core and 16-core Ryzen CPUs make a lot more sense if you’re doing anything beyond just gaming. From the outside, your CPU looks like a single package, but take apart its integrated heat spreader (no, don’t actually do it), and you’ll find that those 12 or 16 cores aren’t all on the same piece of silicon. AMD physically splits them across two Core Complex Dies (CCDs).