Instantly find out if your CPU or GPU is holding back your PC, for gaming, video editing, 3D rendering, and more. Covers 500+ processors and graphics cards.
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Search or browse 559+ processors from Intel and AMD, desktop, laptop, and HEDT. Filter by brand using the quick buttons.
Pick from 501+ options covering NVIDIA, AMD, Intel Arc, laptop GPUs, and integrated graphics.
Set your target resolution (480p up to 8K), use case, and your system's RAM for the most accurate result.
Instantly see your bottleneck percentage, which component is limiting your build, and tailored upgrade advice.
A bottleneck occurs when one component in your PC cannot keep pace with the demands placed on it by another. The slower part restricts the full potential of the faster one, like a wide pipeline narrowing to a single point.
In gaming and rendering, the two most common bottleneck points are the CPU and the GPU. When they are significantly mismatched, one sits idle waiting for the other, causing lower FPS, stuttering, and wasted hardware performance.
Common signs of a bottleneck:
A small bottleneck under 10% is normal. Our calculator helps you identify whether your pairing is efficient or an upgrade would make a meaningful difference.
Not all bottlenecks come from the same component.
Happens when your processor cannot feed the GPU fast enough. Most common at 1080p with a high-end GPU paired with an older or budget CPU.
Occurs when the graphics card cannot render frames quickly enough. Most common at 1440p and 4K where pixel count greatly increases GPU workload.
Insufficient RAM forces the system into slow virtual memory. 16 GB is the minimum for 2026 gaming; 32 GB recommended for content creators.
Slow HDDs or old SATA SSDs cause long load times and in-game stutters. NVMe SSDs dramatically reduce this in open-world titles.
Higher resolution shifts more load to the GPU, which can relieve CPU bottlenecks.
| Resolution | Primary Bottleneck | Best For | Notes |
|---|---|---|---|
| 1080p | CPU (most common) | Competitive / eSports gaming | CPU has biggest FPS impact here |
| 1440p | Balanced CPU/GPU | General gaming, streaming | Sweet spot for most mid-range builds |
| 4K UHD | GPU (almost always) | Cinematic, high-fidelity gaming | CPU matters far less at 4K |
| Ultrawide 1080p | GPU slightly | Immersive gaming | ~25% more pixels than 1080p |
| Ultrawide 1440p | GPU | Sim, racing, RPG | Requires a strong GPU |
| 8K | GPU (extreme) | Future-proofing, content creation | Only RTX 5090 / RX 9070 XT class suitable |
Once identified, these steps can reduce or eliminate your bottleneck.
The most effective fix. If CPU is the limit, upgrade on the same platform. If GPU is the limit, a higher-tier card unlocks more frames immediately.
Moving to 1440p or 4K shifts more load to the GPU, easing a CPU bottleneck without hardware spending.
Squeezes more from existing hardware. Ensure proper cooling first. Can reduce a mild bottleneck but won't bridge a large generational gap.
Background apps consume CPU cycles. Closing them frees headroom and can reduce a mild CPU bottleneck during gaming.
Ensure RAM runs at its rated speed in BIOS. Ryzen CPUs especially benefit, 6000 MHz DDR5 is the sweet spot for Zen 4/5.
Lower CPU-intensive settings (draw distance, NPC density) or raise GPU-intensive ones (shadows, reflections) to better balance the workload.
Everything you need to know about PC bottlenecks.
BottleneckDetector is a free, browser-based tool built for PC builders, gamers, and content creators. No sign-up, no personal data collected, just a fast, accurate bottleneck check.
Our performance scores are derived from publicly available benchmark data. We update the database continuously to include the latest hardware: Intel Core Ultra 200, AMD Ryzen 9000, NVIDIA RTX 5000 Blackwell, and AMD Radeon RX 9000 RDNA 4.
The calculator uses a weighted formula accounting for:
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Free to use: No sign-up required, Updated for 2026