Bottleneck (CPU-bound vs GPU-bound)
Also searched as: bottleneck · cpu bound · gpu bound · cpu bottleneck · gpu bottleneck · bottlenecking
What it means
The part of your PC running flat-out while the rest waits is the bottleneck. In games it is usually the GPU (GPU-bound) or the CPU (CPU-bound), and which one it is decides what will actually raise your FPS.
More detail
Watch usage during a game. If the GPU sits near 100% and the CPU has headroom, you are GPU-bound — lowering resolution or settings, or turning on upscaling, buys frames. …
In the Blackbook
The deeper explanation continues inside the app. The Blackbook publishes its verdicts here — the full write-ups stay in the book, on your rig, next to your own measurements.
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