PC Bottleneck Calculator: find what is limiting your PC.
Compare CPU and GPU capability for your workload, resolution and memory setup. Get a practical report without creating an account.
✓ No sign-up✓ Runs in your browser✓ Practical upgrade guidance
PC Bottleneck Calculator
Analyze your configuration
Ready
Live report
86/100
Healthy & balanced
Your selected CPU and GPU are a sensible match for this target.
Relative workload capacityBalanced pairing
Ryzen 5 7600X
79
CPU index 79
↔
RTX 4070
74
GPU index 74
Resolution1440p
Estimated load510 W
StorageNVMe SSD
CPU ↔ GPU balance88%
Memory headroom78%
Thermal health84%
Power headroom91%
Next step: No urgent core upgrade. Focus on maintenance, drivers and game settings.
A full report looks at CPU and GPU balance alongside RAM, storage, thermals and power headroom, not just one percentage.
More than one number
See the whole system.
A useful PC check considers the processor, graphics card and the supporting hardware around them.
CPU
CPU–GPU balance
Estimate which side is more likely to limit your selected resolution and workload.
RAM
Memory headroom
Check whether your installed RAM fits gaming, creative work or everyday use.
°C
Thermal health
See how your peak temperature affects the overall health estimate.
SSD
Storage experience
Understand where drive speed matters for loading, updates and responsiveness.
PSU
Power headroom
Compare estimated platform demand with the selected PSU capacity.
↑
Upgrade guidance
Turn several checks into a practical next step instead of chasing a single percentage.
Transparent methodology
Understand the estimate.
Our calculator uses relative component tiers and adjusts them for resolution and workload. Supporting hardware is scored separately so one strong component does not hide another limitation.
01
Normalize capability
CPU and GPU choices use relative performance and power values for comparison.
02
Adjust for workload
Gaming, creative work and everyday use put different demands on hardware.
03
Check supporting parts
RAM, storage, temperature and PSU capacity contribute to the health score.
04
Explain the result
The report highlights the limiting scenario and suggests what to verify next.
PC guides
Learn how to find and fix a bottleneck.
Step-by-step guides that help you verify the calculator result on your own PC.
A bottleneck is a component or condition that limits a particular workload before the rest of the system. The limiting component can change with resolution, settings, frame rate and application.
Is a small bottleneck bad?
No. Every system has a limiting factor in a particular workload. A small imbalance only matters if it prevents you from reaching your intended experience.
Does resolution change a bottleneck?
Yes. Higher resolutions generally increase GPU rendering work, while high-refresh 1080p gaming can put relatively more pressure on the CPU.
How can I verify the result?
Monitor GPU utilization, CPU usage per core, clocks, memory use, temperatures and frame time while running the exact game or application you care about.
How to use the calculator
Check your PC bottleneck before changing hardware
A PC bottleneck is not a permanent property of a computer. The component that limits performance can change with the game, application, resolution, graphics settings, frame-rate target and background workload. That is why a useful bottleneck check should be treated as a starting point rather than a single percentage that applies to every situation.
Selecting a CPU and GPU, adding the rest of your setup and running the check takes under a minute.
Start by selecting the processor and graphics card that are installed in your system. Choose the resolution you actually play or work at, then select the workload that most closely matches your use. Add your RAM capacity, storage type, peak temperature and PSU wattage so the supporting-hardware checks have context.
How to verify a calculator result
After running the calculator, reproduce the workload on your real PC and monitor GPU utilization, CPU usage by core, clock speeds, RAM usage, temperatures and frame time. A GPU that remains close to full utilization during a graphics-heavy game can be behaving exactly as intended. Conversely, a low GPU utilization combined with one or more CPU cores near their limit can point toward a CPU-side limitation. Stutter can also come from RAM pressure, thermal throttling, storage activity, drivers or background software.
Why resolution matters
Resolution changes how much work the graphics card performs for every frame. At 1080p and very high refresh rates, a fast GPU may be able to render frames quickly enough that the CPU becomes the limiting factor. Moving to 1440p or 4K generally increases GPU workload and can change the balance. This is why a CPU and GPU pairing should always be evaluated in the context of the display and settings you intend to use.
Why the result is an estimate
This tool uses relative component values and workload adjustments rather than a database of measured FPS for every game. It cannot reproduce every driver version, game engine, BIOS setting, cooling condition or background process. Use the report to identify questions worth testing, then confirm important decisions with current reviews and real-world benchmarks.
