Free CPU and GPU bottleneck calculator

Bottleneck calculator

Pick your processor, graphics card, resolution and game. You get an estimated frame rate, how hard each component is working, and whether an upgrade would actually change anything.

Configuration
ResultTypical AAA game · 1920 x 1080 · High

Estimated average frame rate

108fps

Processor could sustain

153

Graphics card could sustain

110

Performance left unused

28.3%

Load balance

CPU limitedGPU limited
Processor load71%

Ryzen 5 7600

Graphics card load99%

GeForce RTX 4070

Noticeable imbalance

One component is holding the other back enough to see in a frame rate counter. An upgrade would help, though it is not urgent.

Video memory: Enough for these settings · Falls short of 144 Hz. Expect around 108 fps.

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Estimated frame rate by resolution
Graphics card could sustainProcessor could sustain
1920 x 1080108 fps · GPU limited
2560 x 144064 fps · GPU limited
3440 x 144049 fps · GPU limited
3840 x 216022 fps · GPU limited

Your processor sets a ceiling that barely moves with resolution. Your graphics card sets one that falls sharply. Where they cross is what decides your frame rate.

What would actually help
Radeon RX 6900 XTgpu121 fps+12%
GeForce RTX 5070gpu123 fps+13.9%
GeForce RTX 3080 Ti 20 GBgpu123 fps+13.9%

These are model estimates, not measured benchmarks. Real results vary with memory speed, drivers, background load and the specific scene.

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How to read this result

We do not give you a single bottleneck percentage, because that number is not measurable and does not tell you what to do. Instead we estimate two things separately: the frame rate your processor could sustain if the graphics card were infinitely fast, and the frame rate your graphics card could sustain if the processor were. Your machine runs at the slower of the two, and the gap between them is the performance going unused.

Why resolution changes the answer

Rendering more pixels gives your graphics card more work. It gives your processor none. That single fact is why the same pair of components can be processor-limited at 1080p and perfectly balanced at 4K, and it is what most other bottleneck calculators get wrong.

You can see it in the resolution chart above. The processor ceiling barely moves as resolution climbs, while the graphics ceiling falls away sharply. Where the two cross is what actually decides your frame rate.

Why the game matters

A competitive shooter running at 300 frames per second and a flight simulator struggling at 45 are stressing completely different parts of the same machine. Counter-Strike 2 is almost entirely processor-bound. Cyberpunk 2077 at ultra settings is almost entirely graphics-bound. A calculator that ignores which game you play cannot give you a useful answer.

When an upgrade is worth it

Some imbalance exists in every build and most of it is not worth spending money on. As a rough guide: under about 10% of unused headroom is normal and invisible. Between 10% and 30% you might see it in a frame rate counter but you would not feel it. Above roughly 30%, one component is meaningfully holding the other back and an upgrade starts to make sense.

Before that, try raising your resolution or quality settings. If you are processor-limited, moving from 1080p to 1440p often costs you almost nothing in frame rate while making the picture noticeably better — you are simply putting idle graphics performance to work. That is free, and our tool will tell you when it applies.

Frequently asked questions

Is a bottleneck always a problem?

No. Something always limits your frame rate; that is how computers work. The question is only whether the gap is large enough to matter and cheap enough to close.

How accurate is this?

These are model estimates built from published manufacturer specifications, not measured benchmarks. The model is calibrated so its relative ordering matches well-established real-world relationships between products. It is reliable for comparing options and deciding what to upgrade. It is not a substitute for benchmarking your own machine. Our methodology page explains exactly how the numbers are produced and what the model cannot see.

Where does the hardware data come from?

Published manufacturer specifications — shader counts, clock speeds, memory bandwidth, core counts and cache sizes — sourced from Wikipedia under CC BY-SA 4.0. We do not republish third-party benchmark scores.

Are laptop parts supported?

Not yet, deliberately. Laptop components are thermally limited in ways this desktop model would misrepresent, so including them would produce confidently wrong answers. Desktop parts from roughly 2016 onward are covered: 126 graphics cards and 201 processors.