PC Bottleneck Calculator
Free bottleneck calculator for any CPU and GPU pairing. Pick your components and the resolution you actually play at, and you'll get a bottleneck percentage, estimated FPS at three quality presets, and concrete upgrade recommendations - not just a vague "moderate bottleneck" verdict. Database covers 303+ CPUs and 142+ GPUs with prices updated daily from Newegg.
Resolution matters - the same pairing can be balanced at 1440p but bottlenecked at 1080p. At lower resolutions, games lean harder on the CPU. At 4K, the GPU does most of the work. We weight our calculations accordingly so you get an accurate picture at the resolution you actually play at.
PC Bottleneck Calculator
Select your CPU, GPU, and gaming resolution to check for bottlenecks and get personalized upgrade recommendations.
Auto-Detect Your Hardware
We can detect your GPU via WebGL - no plugins needed. Select your CPU manually below.
Popular Bottleneck Checks
AMD Ryzen 5 9600X + NVIDIA RTX 5070
CPU: 88/100 · GPU: 82/100
AMD Ryzen 5 9600X + AMD RX 9070 XT
CPU: 88/100 · GPU: 84/100
AMD Ryzen 5 9600X + NVIDIA RTX 5080
CPU: 88/100 · GPU: 93/100
AMD Ryzen 5 9600X + NVIDIA RTX 4070 Ti Super
CPU: 88/100 · GPU: 84/100
AMD Ryzen 5 9600X + AMD RX 7900 XTX
CPU: 88/100 · GPU: 88/100
AMD Ryzen 7 9800X3D + NVIDIA RTX 5090
CPU: 99/100 · GPU: 99/100
How This Bottleneck Calculator Works
Most bottleneck calculators online use a single number that ignores what resolution you actually play at. That makes them mostly useless - the same RTX 5080 paired with a Ryzen 5 7600 will look "perfectly balanced" at 4K and "severely bottlenecked" at 1080p. The truth is both, depending on your monitor.
We score every CPU and GPU on a 0-100 gaming scale based on real benchmark data (1080p and 1440p gaming averages from TechPowerUp, GamersNexus, and Tom's Hardware). Then we weight the two scores by the resolution you select: 60% CPU / 40% GPU at 1080p, 40% / 60% at 1440p, and 20% / 80% at 4K. The gap between the weighted scores is your bottleneck percentage.
Bottleneck verdicts: under 10% is balanced (don't worry about it), 10-25% is moderate (noticeable in CPU-heavy games but fine overall), and over 25% means one component is meaningfully holding the other back - an upgrade will show up immediately in your frame rate.
Common Bottleneck Scenarios
Real pairings people ask about. Click through to see the full bottleneck analysis at 1080p, 1440p, and 4K.
AMD Ryzen 7 9800X3D + NVIDIA RTX 5090
The current top-end gaming pair, 1440p/4K
Ryzen 5 7500X3D + NVIDIA RTX 4070 Ti
Mid-range value, 1440p
AMD Ryzen 9 7900X + NVIDIA RTX 5080
High-end without 3D V-Cache, 1440p/4K
Intel Core i7-14700K + NVIDIA RTX 4090
Last-gen flagship, still strong
AMD Ryzen 5 9600X + NVIDIA RTX 5070
Best balanced 1440p value build
Intel Core Ultra 7 265K + NVIDIA RTX 5080
Intel LGA1851 high-end pair
Frequently Asked Questions
What is a PC bottleneck?
A PC bottleneck occurs when one component (usually the CPU or GPU) limits the performance of the other. For example, if your CPU is too slow to keep up with your GPU, the GPU will sit idle waiting for data, reducing your overall frame rate. A balanced system has both components working near their full potential.
How do I check if my PC has a bottleneck?
Use our free bottleneck calculator: select your CPU, GPU, and gaming resolution. The tool compares their performance scores weighted by resolution (1080p is more CPU-dependent, 4K is more GPU-dependent) and tells you which component is the limiting factor and by how much.
Does resolution affect bottlenecking?
Yes, significantly. At 1080p, the CPU handles about 60% of the workload, making CPU bottlenecks more common. At 4K, the GPU handles about 80% of the work, so GPU bottlenecks are more likely. The same CPU-GPU pair can be balanced at one resolution and bottlenecked at another.
What is an acceptable bottleneck percentage?
A bottleneck under 10% is generally considered balanced and not worth worrying about. Between 10-25% you may notice some performance loss but it is usually acceptable. Over 25% means one component is significantly holding the other back and an upgrade would make a noticeable difference.
Should I upgrade my CPU or GPU to fix a bottleneck?
Upgrade whichever component is the bottleneck. If the calculator shows a CPU bottleneck, upgrading your CPU will help most. If it shows a GPU bottleneck, a better GPU will give you the biggest improvement. Sometimes changing resolution (e.g. moving from 1080p to 1440p) can also rebalance the workload.