PC Bottleneck Calculator
Pick your CPU, GPU, and resolution below for an honest bottleneck range - not a fake-precise single percentage - plus estimated FPS at three presets and concrete upgrade picks. Covers 310+ CPUs and 142+ GPUs with prices updated daily.
Auto-Detect Your Hardware
We can detect your GPU via WebGL - no plugins needed. Select your CPU manually below.
Resolution matters - at 1080p games lean harder on the CPU, at 4K the GPU does most of the work. So the same pairing can read balanced at 4K yet show a CPU bottleneck at 1080p. Our verdict is weighted by the resolution you actually play at, so it flips as your monitor does - not a single fixed number.
Planning a build during the 2026 RAM price crisis? Your CPU-GPU balance is only half the budget math right now - our RAM advisor covers what memory actually costs this month and when 16GB is the smarter buy.
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 misleading - a pairing can be perfectly balanced at 4K yet bottleneck the CPU at 1080p, because the same score gap matters far more when the CPU is carrying 60% of the work. Our verdict is weighted by your resolution, so it can flip from "balanced" to "CPU-limited" as you move from 4K to 1080p - something a single fixed percentage can never capture.
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 - then shift the split for the games you play (esports and simulation titles lean on the CPU, AAA single-player leans on the GPU). The gap between the weighted scores gives your bottleneck range.
We report a range, not a single percentage, because the honest answer varies game to game - a "13.4% bottleneck" is false precision no tool can actually deliver. Every result includes a "How we calculated this" breakdown, and the full formula is public on our methodology page.
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.
What a Bottleneck Actually Feels Like (and When to Ignore One)
First, the thing most calculators won't tell you: every PC has a bottleneck. Something is always the limiting part - the question is whether it's the part you chose, at the resolution you play. A GPU-limited verdict on a gaming build is usually the system working as designed: the most expensive component running at 100% is what you paid for. That's why we don't treat "GPU bottleneck at 4K" as a problem to fix - it's the definition of 4K gaming.
A CPU bottleneck feels different, and worse. Average FPS might look acceptable while the 1% lows crater - hitching in crowded areas, stutter when the action peaks, traffic in open-world cities turning into a slideshow. The tell-tale sign: lowering your graphics settings barely raises your frame rate (the GPU wasn't the one struggling), and GPU usage sits well under 95%. If that matches your machine, the number at the top of your result is the one to act on - each result includes specific upgrade suggestions ranked by how much they'd actually unlock.
When to ignore us entirely: if you play at 60Hz with the frame rate capped, your monitor is the bottleneck and the math above it is academic - check whether your screen matches your GPU before touching either part. And if your verdict came back single-digit, close this tab and go play something. Chasing the last 5% is how people end up spending $400 to gain frames they need a graph to see.
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.