Is a laptop with Core i9 13900HK good enough for gaming, and does the CPU or GPU matter more?

  The Core i9 13900HK is a 14-core/20-thread older flagship whose gaming performance is still plenty; the CPU is rarely the bottleneck. Compare dGPU TGP (incl. Dynamic Boost) with sustained CPU package power first; inspect CPU frame time with HWiNFO in high-refresh 1080p or simulation games, and start from GPU power at 1440p/4K.

  Run 15 minutes in plugged-in performance mode: GPU ~95% with power near TGP means GPU-limited; GPU under ~90% with saturated CPU threads means check CPU power limits and cooling. On older machines, cleaning dust and repasting has an outsized effect on actual framerates.