AMD Ryzen 9 9900X3D CPU Review

3DMark’s CPU Profile Max Threads test separates the 12-Core CPUs from the 16-Core CPUs. Within that, however, we can also see how the “X3D” CPUs compare to the non-X3D CPUs of that class. The AMD Ryzen 9 9900X3D is slightly less performant than the Ryzen 9 9900X, by a 1.3% difference. However, the AMD Ryzen 9 9950X3D is actually 4% faster than the Ryzen 9 9950X. The Ryzen 9 9900X3D is 23% slower than the Ryzen 9 9950X3D, so that tells you the difference the extra cores make.

Looking at the single-thread performance all of the CPUs are close to each other, except the AMD Ryzen 9 9900X3D. It is actually 2% slower in single-thread performance compared to the Ryzen 9 9900X. The Ryzen 9 9950X3D and Ryzen 9 9900X are also about 1% faster than the Ryzen 9 9900X.

In Cinebench 2026, we can also see the difference between 12-Core and 16-Core CPUs. For rendering, the 16-Core CPUs are up to 30% faster than the 12-Core CPUs. Here, we can also see that the Ryzen 9 9900X3D is 0.4% faster than the Ryzen 9 9900X. Interestingly, the Ryzen 9 9950X3D is 5% faster than the Ryzen 9 9950X. The Ryzen 9 9900X3D is 23% slower than the Ryzen 9 9950X3D.

In Single-Core performance, all of the CPUs are very close to each other. Technically, the Ryzen 9 9950X3D and Ryzen 9 9950X are slightly faster, by 1%. The Ryzen 9 9900X3D has the lowest score, but it is still so close to the rest here.

In Geekbench 7 Multi-Core testing, we can again see the difference between 12-Core and 16-Core CPUs. The 16-Core CPUs add about 13% more performance in this system-focused benchmark. The Ryzen 9 9900X3D is very close to the Ryzen 9 9900X, but is 1% below it. The Ryzen 9 9950X3D is 2% faster than the Ryzen 9 9950X. The Ryzen 9 9900X3D is 12% slower than the Ryzen 9 9950X3D.

Single-Core performance is close, but the Ryzen 9 9900X3D does have the lowest result, 2% below the Ryzen 9 9900X.