Check system compatibility before upgrading your hardware.
A bottleneck happens when one component in your computer limits the performance of another. If your graphics card is powerful but your processor is weak, the CPU will restrict GPU performance. This creates imbalance and reduces overall FPS and efficiency.
A PC Bottleneck Calculator is an online comparison tool that analyzes CPU and GPU combinations to estimate system balance. It calculates a percentage result showing whether your hardware is properly matched or not.
The calculator compares hardware benchmarks including core count, clock speed, VRAM, and resolution. Lower resolution (1080p) stresses CPU more, while higher resolution (4K) stresses GPU more.
When you check results, you see a bottleneck percentage.
CPU bottleneck occurs when processor usage reaches 100% while GPU remains underused. This is common in competitive gaming or CPU-heavy simulations.
GPU bottleneck happens when graphics card stays at full load while CPU usage remains low. This usually occurs in high-resolution or graphic-intensive games.
Modern gaming requires at least 16GB RAM. Low memory can cause stuttering.
Using HDD instead of SSD increases loading times and reduces responsiveness.
Poor cooling can reduce performance automatically to prevent overheating.
For gaming, GPU is more important at higher resolutions. For editing and streaming, CPU cores and RAM play a major role.
Before upgrading your PC, always check compatibility and performance balance. A properly matched CPU and GPU provide smoother FPS, better multitasking, and long-term reliability. Using a bottleneck calculator helps you avoid costly mistakes.
It means one component limits the performance of another.
It is noticeable but not critical. Below 10% is ideal.
No system is perfectly balanced, but it can be minimized.
Yes. Lower resolution stresses CPU, higher resolution stresses GPU.
Upgrade the component that shows higher usage and limits performance.