Free PC Bottleneck Calculator
Check if your CPU or GPU is bottlenecking your gaming performance.. Free, no signup, works in your browser.
About PC Bottleneck Calculator
This PC bottleneck calculator analyzes your CPU and GPU pairing to estimate whether one component limits the other in gaming workloads. Get percentage estimates and upgrade suggestions. Runs entirely in your browser — no uploads or installs required.
Frequently Asked Questions
What is a bottleneck in gaming?
A bottleneck occurs when one component (CPU or GPU) limits the performance of the other. For example, a weak CPU paired with a powerful GPU means the CPU cannot feed frames fast enough, limiting FPS.
What bottleneck percentage is acceptable?
A bottleneck under 10% is generally acceptable. Between 10–25%, you will notice some performance loss. Over 25% means a significant imbalance — consider upgrading the weaker component.
How do I fix a CPU bottleneck?
Lower CPU-intensive settings (draw distance, NPC count, physics). Close background apps. If the bottleneck is severe, upgrade to a faster CPU with higher single-thread performance.
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