# PC Bottleneck Calculator > Free online tool to calculate CPU and GPU bottlenecks in PC builds, with upgrade guidance and a hardware performance blog. Curated entry points for AI agents and LLMs. Individual blog articles are listed below; use them for hardware and bottleneck topics. ## Calculator and content - [Free Bottleneck Calculator](https://www.bottleneckgpucpucalculator.com/): Main CPU and GPU bottleneck calculator with upgrade suggestions. - [Blog](https://www.bottleneckgpucpucalculator.com/blog): Index of all articles on PC hardware, gaming performance, and optimization. - [About](https://www.bottleneckgpucpucalculator.com/about): Who built the tool and project background. - [Methodology](https://www.bottleneckgpucpucalculator.com/methodology): How bottleneck scores and FPS estimates are calculated. - [Contact](https://www.bottleneckgpucpucalculator.com/contact): Contact form for feedback and inquiries. ## International homepages - [Spanish calculator](https://www.bottleneckgpucpucalculator.com/es): Calculadora de cuello de botella en español. - [Portuguese calculator](https://www.bottleneckgpucpucalculator.com/pt): Calculadora de gargalo em português. - [German calculator](https://www.bottleneckgpucpucalculator.com/de): Bottleneck-Rechner auf Deutsch. - [French calculator](https://www.bottleneckgpucpucalculator.com/fr): Calculateur de goulot d'étranglement en français. - [Turkish calculator](https://www.bottleneckgpucpucalculator.com/tr): Darboğaz hesaplayıcı Türkçe. - [Polish calculator](https://www.bottleneckgpucpucalculator.com/pl): Kalkulator wąskiego gardła po polsku. - [Italian calculator](https://www.bottleneckgpucpucalculator.com/it): Calcolatore collo di bottiglia in italiano. ## Blog articles - [How to Fix a CPU Bottleneck: 7 Free Fixes Ranked by Real Impact](https://www.bottleneckgpucpucalculator.com/blog/how-to-fix-a-cpu-bottleneck-free-fixes): Seven free fixes ranked by real impact — not forum guesses. This guide targets builders who've already tried the obvious changes and still have GPU utilization stuck below 85%. Ea… - [How to Check for a PC Bottleneck Using Free Software](https://www.bottleneckgpucpucalculator.com/blog/how-to-check-for-a-pc-bottleneck-using-free-software): MSI Afterburner and RivaTuner Statistics Server give you a live GPU and CPU utilization overlay inside any game — completely free. This guide covers installation, the exact eight… - [Can a GPU Bottleneck a CPU? The Upside-Down Bottleneck Explain](https://www.bottleneckgpucpucalculator.com/blog/can-a-gpu-bottleneck-a-cpu-the-upside-down-bottleneck-explained): A GPU bottleneck — technically called being GPU-limited — is not a problem. It's the correct state for any gaming PC. This guide demolishes three common misconceptions, shows real… - [Are PC Bottleneck Calculators Accurate? The Truth Behind the Numbers](https://www.bottleneckgpucpucalculator.com/blog/are-pc-bottleneck-calculators-accurate-the-truth-behind-the-numbers): Bottleneck calculators don't measure your system — they estimate it. This guide tests calculator predictions against real MSI Afterburner readings across four hardware configurati… - [How Much Bottleneck Is Bad? When You Actually Need to Upgrade](https://www.bottleneckgpucpucalculator.com/blog/how-much-bottleneck-is-bad-when-you-actually-need-to-upgrade): A bad bottleneck is not a percentage — it's a set of symptoms. This guide defines the exact GPU utilization readings that cross the threshold from tolerable to urgent, explains fr… - [CPU Bottleneck vs GPU Bottleneck: Which One Is Actually Worse?](https://www.bottleneckgpucpucalculator.com/blog/cpu-bottleneck-vs-gpu-bottleneck-which-one-is-actually-worse): CPU and GPU bottlenecks both hurt performance — but they feel completely different in play. This guide tests both types head-to-head, explains why CPU bottleneck destroys 1% lows… - [What Is a Good Bottleneck Percentage in a Gaming PC?](https://www.bottleneckgpucpucalculator.com/blog/what-is-a-good-bottleneck-percentage-in-a-gaming-pc): A good bottleneck percentage for gaming sits between 0–10%. This guide covers every threshold from ideal to severe, explains why 0% is physically impossible, and maps exactly what… - [RTX 4080 Bottleneck Guide: Maximum Efficiency at 1440p and 4K](https://www.bottleneckgpucpucalculator.com/blog/rtx-4080-bottleneck-guide-maximum-efficiency-at-1440p-and-4k): The RTX 4080 CPU bottleneck is most destructive at 1080p and nearly disappears at 4K. This guide shows which CPUs pair cleanly with NVIDIA's Ada Lovelace GPU at 1440p and 4K, why… - [Ryzen 5 5600X Bottleneck Test: Is It Still Good Enough for High End GPUs](https://www.bottleneckgpucpucalculator.com/blog/ryzen-5-5600x-bottleneck-test-is-it-still-good-enough-for-high-end-gpus): The Ryzen 5 5600X bottleneck threshold sits at the RTX 4070 Super for 1440p gaming. This guide tests four GPU tiers from the RTX 4060 Ti to the 4070 Ti, explains why benchmark res… - [AMD Radeon RX 7900 XTX CPU Bottleneck: The Ultimate Pairing Guide](https://www.bottleneckgpucpucalculator.com/blog/amd-radeon-rx-7900-xtx-bottleneck-ultimate-pairing-guide): The RX 7900 XTX is one of the most powerful GPUs AMD has ever built — but the wrong CPU creates a measurable bottleneck that clips your 4K performance hard. This guide identifies… - [RTX 4070 Ti CPU Bottleneck Guide: Stop Losing Frames](https://www.bottleneckgpucpucalculator.com/blog/rtx-4070-ti-cpu-bottleneck-guide-stop-losing-frames): The NVIDIA RTX 4070 Ti is a serious 1440p GPU — but pair it with a Ryzen 5 3600 or Ryzen 7 3700X and you lock away 25–35% of its performance. This guide shows exactly how much FPS… - [RTX 4090 CPU Bottleneck: Which Processors Won't Limit Your Performance?](https://www.bottleneckgpucpucalculator.com/blog/rtx-4090-cpu-bottleneck-which-processors-wont-limit-your-performance): Pairing the RTX 4090 with the wrong CPU is one of the most expensive mistakes in PC building — and it happens more often than you think. At 1440p, an underpowered processor caps y… - [Best GPU for Ryzen 5 3600 Without Bottleneck](https://www.bottleneckgpucpucalculator.com/blog/gpu-for-ryzen5-3600-without-bottleneck): The AMD Ryzen 5 3600 is still a capable chip — but only when matched with the right GPU. The NVIDIA RTX 4060 is the sweet spot for 1080p and 1440p gaming without bottlenecking. Th… - [Best GPU for Ryzen 5 5600G Without Bottlenecking](https://www.bottleneckgpucpucalculator.com/blog/best-gpu-for-ryzen-5-5600g): Choosing the right GPU for your Ryzen 5 5600G build separates a smooth 1080p gaming machine from a frustrating, stuttery mess. I have tested this APU paired with several discrete… ## Optional - [Privacy Policy](https://www.bottleneckgpucpucalculator.com/privacy-policy): Privacy and data handling policy. - [Terms of Service](https://www.bottleneckgpucpucalculator.com/terms-of-service): Terms for using the website. - [Disclaimer](https://www.bottleneckgpucpucalculator.com/disclaimer): Accuracy limits of bottleneck calculations. - [Cookie Policy](https://www.bottleneckgpucpucalculator.com/cookie-policy): Cookie usage information. - [Sitemap](https://www.bottleneckgpucpucalculator.com/sitemap): HTML sitemap of public pages. - [XML Sitemap](https://www.bottleneckgpucpucalculator.com/sitemap.xml): Machine-readable list of all indexable URLs.