How the calculator works
The model weighs CPU demand more heavily at 1080p and high target frame rates, while higher resolutions shift more work to the GPU. Productivity and mixed workloads use separate weighting.
CPU & GPU Bottleneck Calculator
Check whether a CPU and GPU are well matched for your resolution, frame-rate target and workload.
Live catalog dataNo fake precisionShareable result
H2HBench
Select the required hardware to calculate a result.
- Live catalog data
- No fake precision
- Shareable result
- confidence
How to interpret the result
A limit is not automatically a problem. A GPU limit is normal at high image quality; a CPU limit matters most when chasing high refresh rates. Headroom labels show which part has room for a faster partner.
Factors that affect the result
Results depend on the workload, game engine, drivers, cooling, power limits, memory configuration and background software. H2HBench uses normalized catalog and benchmark data, then reports confidence instead of presenting an estimate as a laboratory measurement.
Frequently asked questions
Is a bottleneck percentage accurate?
No single percentage applies to every game. That is why this tool reports balance classes, the likely limiting component and confidence instead of a pseudo-precise number.
Does resolution change the bottleneck?
Yes. Lower resolutions and very high target FPS increase CPU pressure, while 4K usually moves more of the limit to the GPU.
Should every build be perfectly balanced?
No. A small GPU limit is generally desirable for gaming because it means the graphics card is being used effectively.