How many FPS do AMD Ryzen 9 9900X3D and NVIDIA RTX 5090 manage in Counter-Strike 2 at 1440p and high settings?
An estimated 415 FPS in Counter-Strike 2 at 1440p and high settings. In more demanding titles such as Cyberpunk 2077 it is closer to 216 FPS. Both are model calculations, not measurements.
Is the AMD Ryzen 9 9900X3D + NVIDIA RTX 5090 combination enough for 1440p?
By the model, yes: for 1440p at high settings the combination is a good fit. Balanced for 1440p. The graphics card is the narrower side, and at this resolution that is how it should be: more pixels load the card, not the processor. Your processor keeps headroom (25 % apart), which is why the frame rate stays steady in busy scenes. There is no reason to upgrade. At around 415 frames, more power no longer changes the band you play in.
Does one part hold back the others in AMD Ryzen 9 9900X3D + NVIDIA RTX 5090?
Balanced for 1440p. The graphics card is the narrower side, and at this resolution that is how it should be: more pixels load the card, not the processor. Your processor keeps headroom (25 % apart), which is why the frame rate stays steady in busy scenes. There is no reason to upgrade. At around 415 frames, more power no longer changes the band you play in.
Is an upgrade worth it?
The combination is already well balanced. Concrete suggestions with price and cost per FPS come from the buying advice in the Performance Hub.