AMD’s upcoming Ryzen 9 9900X3D and 9950X3D processors will feature a single 64 MB 3D V-Cache die, same as the 9800X3D. This was confirmed by a leaked CPU-Z screenshot (via @94G8LA) earlier today. The engineering sample pictured consists of 16 cores paired with 128 MB (96 MB + 32 MB) of L3 cache. The CPU has a peak boost clock of 5.7 GHz, on cores across both CCDs, placing it on par with the 9950X in compute workloads.
The Ryzen 9 7950X3D also features an asymmetrical design with a 3D stacked and a stock CCD. However, the former runs at a lower boost clock of ~5.1 GHz, placing it behind the 7950X in compute-oriented workloads like content creation.
The Ryzen 9 9950X3D is going to feature the same all-core boost clock (5.7 GHz) as the 9950X, placing them on par in heavily multi-threaded compute workloads like Cinebench R23 (via HXL). Despite this, the Ryzen 7 9800X3D will likely hold a slight lead in gaming workloads due to better thread residency (on the same CCD==lower latency). The Ryzen 9 9900X3D and the 9950X3D are expected to be announced at CES next week.
