AMD Ryzen 9 9900X3D Linux Performance
Like the Ryzen 9 9950X3D, the 9900X3D was slightly faster than its X (non-X3D) variant for code compilation workloads while consuming similar CPU power to that 9900X.
For those frequently compiling code or looking to assemble a low-cost CI/CD box using a desktop Ryzen processor, the Ryzen 9 9900X3D did compile faster than the Ryzen 9 9900X. But you can find the 16-core Ryzen 9 9950X for around $545 USD compared to the Ryzen 9 9900X3D at $599. So unless if wanting the 9900X3D for its lower TDP, it would make more sense going for a 9950X for multi-threaded code compilation workloads.
The Ryzen 9 9900X3D does perform very well in some technical computing workloads like OpenFOAM CFD where the 9900X3D was faster than the Ryzen 9 9950X (non-X3D). Here at least the Ryzen 9 9900X3D can make sense as a purchase with better performance and lower TDP than the 9950X if not wanting to spend an additional $100 going for the Ryzen 9 9950X3D model.
With the GPAW density functional theory workload was another instance of where the 9900X3D could outpace a non-X3D Ryzen 9 9950X.
Or Incompact3D is another workload loving AMD 3D V-Cache.
In other technical computing workloads the 9900X3D can deliver some nice uplift over the 9900X, but again if you are relying heavily on these workloads you would be best off going for the Ryzen 9 9950X/9950X3D processors unless you are just a hobbyist on a tight budget.