AMD today announced the Ryzen 9 7945X3D mobile processor, which it claims is the fastest notebook processor for gaming, faster than even Intel's Core i9-13980HX. The 7945X3D is a 16-core/32-thread processor that leverages AMD 3D Vertical Cache technology. Much like the desktop Ryzen 9 7950X3D, the 7945X3D features 64 MB of stacked 3D vertical cache memory on one of its two "Zen 4" CCDs, which gives it 96 MB of last-level cache. The second one is a regular "Zen 4" CCD with 32 MB of L3 cache—again, just like the desktop 7950X3D. The most interesting aspect has to be that AMD claims to have pulled off leadership gaming performance at a 55 W+ TDP.

The Ryzen 9 7945X3D is based on the "Dragon Range" multi-chip module. This is essentially a mobile-optimized BGA variant of the desktop "Raphael" MCM, with a higher degree of power optimization. The processor features 16 "Zen 4" CPU cores spread across two CCDs, each with 1 MB of L2 cache. The first CCD has 96 MB of L3 cache thanks to the 3DV cache, while the second CCD has 32 MB of it. Despite its power constrained form-factor, the 7945X3D has a maximum boost frequency of 5.40 GHz. Each of the two CCDs is built on the 5 nm EUV foundry node. The L3D (the die stacked on top of the first CCD) is built on 6 nm, as is the client I/O die (cIOD). The processor supports dual-channel DDR5, and has a 28-lane PCI-Express Gen 5 root complex. AMD claims that the Ryzen 9 7945X3D is on average 15% faster at gaming than its current flagship processor, the 16-core Ryzen 9 7945HX. This should mean that the processor is faster than the Intel Core i9-13980HX. The first notebook to debut the AMD Ryzen 9 7945X3D is the ASUS ROG Strix SCAR 17 X3D, which goes on sale on August 22, 2023.The AMD slide deck follows.