Best Bottleneck Calculators for PCs in 2024

If you are a PC enthusiast or a gamer, you must ensure that your PC runs optimally to provide you with the best possible experience. For this, you need to check if your PC is bottlenecking. Bottlenecking happens when another component limits the performance of your PC’s components.

In such cases, you must identify the components bottlenecking your PC. However, identifying which component is bottlenecking your PC is often difficult. This is where bottleneck calculators come in. In this article, we’ll discuss bottleneck calculators, what makes a good bottleneck calculator, and the best bottleneck calculators for your PC in 2024.

Bottleneck Calculators

What are Bottleneck Calculators?

Bottleneck calculators help you determine which component in your PC is causing the bottleneck. These calculators consider the specifications of your PC components, such as your CPU, GPU, RAM, and storage, to identify which component is limiting the performance of your system.

Apart from pinpointing bottlenecks, some Bottleneck Calculators have additional features that enable users to track their computer’s performance over time, making it easier to detect any trends that affect system speed and efficiency.

Furthermore, Bottleneck Calculators offer a wealth of information about a computer’s various components, including storage, RAM, and cooling systems. This allows you to recognize potential issues before they become major problems and take corrective action before a catastrophic failure occurs.

What Makes a Good Bottleneck Calculator?

A good bottleneck calculator should be accurate, easy to use, and provide actionable insights to improve your system’s performance. The tool should consider various components (such as the CPU, GPU, RAM and more) and provide detailed analysis to help you make informed decisions.

Best Bottleneck Calculators for your PC in 2024

Now that you know what bottleneck calculators are and why they are necessary, here are some of the best Bottleneck Calculators available for PC users in 2024:

  1. Windows Task Manager
  2. MSI Afterburner
  3. PC Builds Bottleneck Calculator
  4. CPU Agent Bottleneck Calculator
  5. TW Bottleneck Calculator
  6. Build Redux
  7. Bodhi Bloom Bottleneck Calculator
  8. HWiNFO

1. Windows Task Manager

If you’re wondering which component of your PC is causing a bottleneck, you might be surprised to learn that the built-in Windows Task Manager can help you identify it. By using the Windows Task Manager, you can quickly and easily determine which component is causing the bottleneck and take appropriate action.

Here’s how to check bottlenecks using the built-in Task Manager on your PC:

  1. Press the Ctrl + Shift + Esc keys simultaneously to open the Windows Task Manager.
  2. Go to the “Processes“ tab at the top of the window.
  3. Observe the utilization percentage for your CPU, Memory, Disk, and Internet.
  4. Launch your favorite game and keep it running in the background.
  5. Press Alt + Tab to switch to the Task Manager window.
  6. Check the utilization percentage of each component for the game.
  7. If either the CPU, Memory or Disk is at 100% utilization, it indicates a bottleneck in your PC.

While many third-party bottleneck calculators are available, the Windows Task Manager is a built-in tool available to all Windows users. It’s a quick and easy way to identify bottlenecks without having to install any additional software.

2. MSI Afterburner

MSI Afterburner is a popular and reliable live monitoring tool that allows you to track your computer’s performance. It can help you show the utilization percentage of your PC’s RAM, CPU, GPU, and more. It is a tool that is both user-friendly and powerful. With MSI Afterburner, you can identify potential bottlenecks and maximize your PC’s performance.

To identify a bottleneck on your PC, you can use MSI Afterburner with the following steps:

  1. Download and install MSI Afterburner on your computer.
  2. Open the settings and activate on-screen statistics.
  3. Ensure you have enabled CPU, GPU, and RAM usage percentages.
  4. Launch your favorite game and keep it running in the background.
  5. Keep an eye on the usage percentage of the CPU, GPU, and RAM while playing.
  6. If any component reaches 100% usage, it indicates a bottleneck.
  7. For example, if your GPU usage is at 100% while the CPU stays at 30-35% usage, it suggests that the GPU is bottlenecking the CPU.

3. PC Builds Bottleneck Calculator

PC Builds Bottleneck Calculator is a fantastic online tool specifically designed for gamers to identify bottlenecks in their computer’s GPU and CPU. The calculator is user-friendly and web-based, requiring just a few simple steps to access it:

  1. Open the PC Builds Bottleneck Calculator.
  2. Select your PC’s CPU and GPU. You can even search for them.
  3. Select your preferred screen resolution and the Purpose.
  4. Once you have selected everything, click the “Proceed to calculation” button.

4. CPU Agent Bottleneck Calculator

CPU Agent Bottleneck Calculator is also a web-based bottleneck calculator that is easy to use and provides accurate information.

CPU Agent provides more detailed information about the bottleneck than the PC Builds Bottleneck Calculator. It includes CPU, GPU, RAM size, RAM speed, resolution, and quality options for more accurate bottleneck calculations.

With this bottleneck calculator, you can calculate the bottleneck between multiple hardware components, unlike the PC Builds Bottleneck Calculator which only calculates the bottleneck between the CPU and the GPU. Here’s how to use the CPU Agent Bottleneck Calculator:

  1. Open the CPU Agent Bottleneck Calculator.
  2. Select your PC’s CPU, GPU, RAM size, RAM speed, display resolution, and quality settings.
  3. Once you have selected everything, click the “Calculate FPS and Bottleneck” button.

5. TW Bottleneck Calculator

TW Bottleneck Calculator is another web-based tool that considers the specifications of your CPU and GPU to determine if your system is experiencing bottlenecking. It gives you a score indicating if your CPU or GPU is causing the bottleneck. If you want a simple and easy-to-use bottleneck calculator, you should try this one. Here’s how to use it.

  1. Open the TW Bottleneck Calculator.
  2. Select your PC’s CPU and GPU. You can even search for them.
  3. Select your preferred screen resolution.
  4. Once you have selected everything, click on the “Calculate” button.

6. Build Redux

The next bottleneck calculator on our list is Build Redux. As one of the leading PC manufacturers, Build Redux allows its users to check for bottlenecks to combat and performance issues with a few simple tricks. It is not essentially designed to be a bottleneck calculator but it is definitely useful for that. Here’s how to use Build Redux to check for bottleneck:

  1. Go to the Build Redux website.
  2. Select the resolution of your PC and then select any of the options (Good, Better, etc.)
  3. Now, click on Customize.
  4. Click on each of the components and choose the component that matches your PC configuration.
  5. If you see a message saying something was updated to match your configuration while that is not in your current configuration, this means that your PC has a bottleneck.
  6. The bottleneck is most likely with the component that was updated.

7. Bodhi Bloom Bottleneck Calculator

If you want an easy-to-use online tool to examine your system’s performance, especially the CPU and GPU, go no further than Bodhi Bloom Bottleneck Calculator. Just enter your system specifications, and this calculator will reveal any possible performance bottlenecks. Here’s how to use it:

  1. Open the Bodhi Bloom Bottleneck Calculator.
  2. Input details, such as CPU cores, CPU clock speed, GPU clock speed, and more.
  3. Specify memory size, shader count, and other relevant GPU details.
  4. Once done, click on Calcuate, and you should see two results— System Stats and Recommend Use.

System Stats: Reveals the component that has a bottleneck.


HWiNFO is a system monitoring app like MSI Afterburner and Task Manager. It lets you monitor the usage of your CPU, GPU, RAM, and other critical components. Since all of the monitoring happens in real time, you can easily detect which component is causing a bottleneck. Here’s how:

  1. Download and install HWiNFO for your PC.
  2. Launch HWiNFO, and you should see the status of the system.
  3. Use the gathered stats to identify any hardware component causing potential bottlenecks on your computer.
  4. It can be a bit challenging for a layman, but this tool is an absolute pleasure to use if you are an expert.

Are PC Bottleneck Calculators Reliable?

PC bottleneck calculators offer a preliminary glimpse into the potential efficiency or constraints of a computer setup, yet their accuracy is not uniform across the board.

It’s essential to approach the outcomes of PC bottleneck calculators with skepticism. Although these tools exist in abundance and can sometimes provide valuable insights, they are not infallibly reliable. To achieve a more precise understanding of your system’s dynamics, it’s advisable to combine the insights gained from these calculators with your own thorough research and practical assessments. Nonetheless, when used judiciously and as part of a broader analytical approach, bottleneck calculators can serve as a useful starting point.

These calculators typically evaluate the capabilities and performance metrics of your system’s key components, including the CPU, GPU, and memory, aiming to spotlight any disparities or constraints that might lead to performance bottlenecks.

Frequently Asked Questions

Is Task Manager enough for calculating bottlenecks on my PC?

Yes, Task Manager will do the job if you want to check the bottlenecks on your PC. However, you may also want to try other bottleneck calculators for more accurate information.

Can bottleneck calculators solve bottlenecking issues?

No, bottleneck calculators can only identify which component is causing the bottleneck. You will need to upgrade the component to solve the bottleneck issue.

What components of my PC can be bottlenecked?

The CPU, GPU, RAM, and storage are often bottlenecked components on PCs. This can be caused due to poor-quality hardware or even software conflicts.

Are bottleneck calculators accurate?

Bottleneck calculators can be accurate, but it’s important to remember that they are estimates based on the specifications of your components. You may try several bottleneck calculators before concluding.

Final Words

Identifying a bottleneck is crucial for improving your PC’s performance. When one component is fully utilized, other components can be prevented from delivering peak performance. Bottleneck calculators are useful tools that can help you identify which component is causing the bottleneck in your system.

By eliminating the bottlenecking component, you can ensure your system runs optimally and provides you with the best experience possible. Remember, while bottleneck calculators can identify the issue, you will need to upgrade the component to solve the bottleneck issue. If you have any further questions, leave them in the comments section below. We will try to help you out.

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