isitBOTTLENECKED
Check cpu and gpu compatibility.
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A web calculator that estimates CPU-GPU bottlenecks and component compatibility for PC builds.
- for
- PC gamers and builders who want to assess hardware balance.
- pricing
- free
Key features
- Component input — Enter CPU, GPU, RAM, storage and resolution to generate a bottleneck report.
- Bottleneck percentage — Shows a percentage indicating how unbalanced the CPU-GPU pair is.
- Verdict & recommendations — Identifies CPU- or GPU-bound limits and suggests upgrade steps.
- RAM & storage analysis — Includes memory and drive checks in the compatibility score.
- Resolution weighting — Adjusts results based on target gaming resolution (1080p-4K).
- No account required — Runs entirely in the browser with no downloads or sign-up.
Use cases
- Determine if a new GPU will be limited by an existing CPU
- Identify whether a performance drop is due to CPU or GPU
- Plan a balanced PC upgrade within a budget
- Troubleshoot frame-rate issues without installing monitoring tools
- Validate RAM and storage adequacy for modern games
isitBOTTLENECKED FAQ
How does the calculator determine bottleneck percentage?+
It cross-references your specs with benchmark data from PassMark, UserBenchmark and 3DMark and weights CPU, GPU, resolution and workload type.
Do I need to create an account to use the tool?+
No, the calculator works in the browser with no sign-up or download required.
Can the tool tell me which component to upgrade?+
Yes, it provides a CPU-bound or GPU-bound verdict and lists upgrade options ranked by cost-to-performance impact.
What resolution ranges are supported?+
You can select 1080p, 1440p or 4K as the target gaming resolution.
Is the result a definitive performance measurement?+
It is an estimate based on benchmark data; real-time monitoring with tools like MSI Afterburner gives more accurate results.
Summarized by DevHunt from isitbottlenecked.com · Oct 15, 2026. Details may change; check the official site.
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