System Requirements

FlexSim is designed to run on most modern Windows systems. Unique or complex modeling situations may carry additional hardware requirements.

Check out this FlexSim Answers article for an in-depth discussion regarding the components that make the most difference when building and running your simulation models.

Minimum System Requirements

Most desktop and laptop computers produced in the last few years meet FlexSim’s minimum specs. A system that meets these specs will allow you to evaluate FlexSim, go through the tutorials, and build small to medium sized models.


Any modern1 x86 or x64 Intel or AMD processor




Any GPU that supports OpenGL 3.1 or higher:

  • Nvidia GeForce 300 Series or higher
  • AMD Radeon R600 (HD 2xxx, HD 3xxx) Series or higher
  • Intel HD 2000 or higher


Any Microsoft-supported Windows operating system2, 32- or 64-bit.
Currently supported editions of Windows include:


2.5 GB free

  • FlexSim’s installer may be up to 1.2 GB in size, depending on version. After successful installation, the installer file may be deleted.
  • After installation, FlexSim’s program files will use up to 1.2 GB of disk space.
  • Your model files, CAD layouts, images, custom 3D shapes, import data, exported reports, and other simulation related assets that you provide will take disk space in addition to the software’s installation footprint.

Additional Software

Recommended Specs

For the best experience—and for larger, more graphically intense, or complex models, including importing custom shapes and using the experimenter or optimizer features—we recommend upgrading the minimum specs to at least the following:


A CPU scoring 12,000 or better in PassMark – CPU Mark benchmark, such as:


16 GB RAM or more


A GPU scoring 8,000 or better in PassMark – G3d Mark benchmark, such as:


One of the latest two releases of Microsoft Windows 10, 64-bit.


  1. Some modern low power processors, such as Intel’s Atom, have lower performance in highly demanding apps like FlexSim than mainstream desktop and notebook processors. Consequently, large simulations will take longer to complete on these low power CPUs. ARM processors are not supported.
  2. Once an operating system reaches its end of extended support with Microsoft, FlexSim no longer actively supports that OS. Windows on ARM is not supported.
  3. FlexSim uses functionality provided by Microsoft’s latest .NET framework. The .NET framework is already installed on most computers. It can be freely obtained from Microsoft Windows Update, or as a standalone download directly from Microsoft. In addition, FlexSim’s OptQuest add-on requires .NET framework version 3.5.
  4. Microsoft’s Visual Studio can be used in conjunction with FlexSim to build compiled models or enhance system level functionality (OS, network, etc.). These features are optional, however. FlexSim does not require a compiler to build or run simulation models. Microsoft’s Visual Studio Community is a free download from Microsoft Corporation.