# Free PC Bottleneck Calculator - CPU vs GPU

> Check whether your CPU or GPU is holding your PC back. Pick your parts and resolution for a free bottleneck estimate - no signup, instant result.

Source: https://skinrender.com/bottleneck-calculator
Licence: CC-BY-4.0, attribution to SkinRender.com (Yamiru).

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## Free PC Bottleneck Calculator - CPU vs GPU

Pick your CPU, GPU and resolution to see which part is more likely holding the other back.

A bottleneck is when one component - usually the CPU or GPU - limits the performance of the other, so upgrading the faster part alone wouldn't improve FPS much. This calculator gives a rough estimate based on relative generational performance tiers, not exact per-game benchmarks.

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Estimate based on relative generational performance tiers, not measured per-game benchmarks. Real results vary by game and settings.

## Is My CPU or GPU Holding Me Back?

Pick your CPU and GPU from the lists above and choose your resolution. The calculator estimates which part is more likely to be the limiting factor, based on relative generational performance tiers. It's a starting point for upgrade decisions, not a per-game benchmark.

## Why Resolution Matters

At 1080p, the GPU renders each frame faster, so the CPU has to keep up more often - CPU bottlenecks are more common. At 1440p and 4K, the GPU does proportionally more work per frame, which shifts the balance toward the GPU. That's why the same PC can be CPU-bound at 1080p and GPU-bound at 4K.

## Frequently Asked Questions

No - it's a rough estimate based on general relative performance tiers, not exact per-game benchmarks. Real results depend on the specific game, settings and other hardware like RAM speed.

If the result shows CPU-bound, a GPU upgrade alone will give diminishing returns until the CPU is upgraded too. If GPU-bound, the GPU is the better upgrade target.

## Related Tools

- [**FPS & Frame Time Calculator**](https://skinrender.com/fps-frame-calculator) - frame time and input lag
- [**Resolution Calculator**](https://skinrender.com/resolution-calculator) - stretched resolution and PPI
- [**Monitor Size Calculator**](https://skinrender.com/monitor-size-calculator) - viewing distance and size

## Questions and answers

### What is a PC bottleneck?

A bottleneck is when one component - usually the CPU or GPU - limits the performance of the other. This calculator gives a rough estimate based on relative performance tiers, not exact per-game benchmarks.

### Is this bottleneck calculator exact?

No. It is a rough estimate based on general relative performance between component generations. Actual bottleneck depends on the specific game, settings, resolution and other hardware like RAM speed.

### Does resolution affect bottlenecking?

Yes. Higher resolutions like 1440p and 4K shift more of the workload to the GPU, which reduces CPU bottlenecking. At 1080p, CPU bottlenecks are more common.


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