CPU / GPU Bottleneck Calculator

How this checker works

We estimate the frame rate your CPU can sustain in modern AAA games and compare it with the FPS your GPU actually delivers at your chosen resolution, using the same licensed benchmark data that powers FPS estimates across UFDForge. When the two are within ~15% of each other the pairing is balanced; beyond that, we name the limiting part and how hard it limits you. No spec-sheet percentages, no scare numbers designed to sell you a CPU you don't need.

Bottleneck FAQ

What is a CPU or GPU bottleneck?

A bottleneck is when one part caps your frame rate while the other has headroom left. If your CPU can only prepare 90 frames per second but your GPU could render 140, you get 90 — the CPU is the bottleneck. Some imbalance is normal; it only matters when the gap is big at the resolution you actually play.

Is a GPU bottleneck bad?

Usually no — it is the healthy state for a gaming PC. Your GPU being the limit means you can raise or lower graphics settings to trade image quality for FPS. A strong CPU bottleneck is the one worth fixing, because no settings change will get those frames back.

How is this different from other bottleneck calculators?

Most bottleneck sites output a made-up percentage from spec-sheet math. This checker compares your CPU’s achievable frame rate against what your GPU actually delivers in real game benchmarks at your chosen resolution — the same analysis that powers the UFDForge builder and upgrade advisor.

Does resolution change the bottleneck?

Massively. At 1080p the CPU does proportionally more work, so CPU bottlenecks show up there first. At 4K the GPU carries the load and even a mid-range CPU rarely limits you. Always judge a pairing at the resolution you play.