How Does CAD Software Work?

How Does CAD Software Work?

When working with CAD software, it is important to understand how it works. This will help you decide which CAD package is best for you and your company.

CAD software is a computer program that allows designers to develop computer models with geometrical constraints. This allows for greater design precision.

Graphics Kernel

CAD software uses a geometric modeling kernel, which translates math equations into shapes. This means that even simple commands like “curve this edge” or “add a layer” involve some serious math.

There are several types of geometry kernels, but the two most widely used are Parasolid and ACIS. Each can perform different tasks and interpret commands differently.

For example, a geometry kernel that is used in SolidWorks might be able to curve an edge while another geometry kernel in Solid Edge would not be able to do so. This is because each kernel has a set of functions that are determined by parameters and can carry out specific tasks.

In addition, CAD files contain meta-data such as object names and IDs, user-defined properties, layers, Product and Manufacturing Information (PMI) and validation properties. Some CAD file formats, such as STL, can transmit these data; others lack them.

As a result, industrial CAD requires special functions and operations to avoid redundant data interaction. In recent years, some methods for industry CAD development have emerged.

Graphics Processing Unit (GPU)

Graphics processing units (GPUs) are used to perform computation associated with computer graphics and video processing. GPUs are an essential part of modern computers and help power a wide variety of tasks including image and video editing, gaming, computer-aided design (CAD) software, machine learning algorithms, scientific computing simulations, 3D rendering, artificial intelligence (AI), augmented reality (AR), virtual reality (VR), cryptocurrency mining and much more.

Graphics cards are a separate component from the CPU, but they can be embedded or discrete. Integrated GPUs, or GPUs that are present inside the CPU, share a portion of the CPU’s memory.

The GPU is a specialized processor that uses multiple cores to process and interpret graphical data. These cores can operate independently or in parallel, Check out the post right here.

The GPU also has a random access memory (RAM) to store information on the images that it processes. The RAM is further connected to a digital-to-analog converter, or DAC, that converts the digital signal into an analog signal that the monitor/displaying unit can use.

Graphics Memory

The amount of memory on the graphics card can be a deciding factor in how well a computer will perform. A bigger RAM size will give you more room to store and access data.

The speed of the RAM is also important. A faster RAM will be able to process more data at once and therefore increase your performance.

What’s more, a high-speed RAM will also be able to store and access data quicker than lower-end versions.

Similarly, a solid-state drive (SSD) is another great option that can be used to host your operating system and AutoCAD software. A SSD can boot, launch applications and load files many times faster than a traditional hard drive.

The best graphics card for AutoCAD is a dedicated Nvidia or AMD card with at least 2GB of GPU memory, OpenGL 4, DirectX 11.1, Shader Model 5, and a graphics driver dated August 2017 or newer. The best video card for AutoCAD is a mid-range Nvidia Professional or Quadro product that will do the job well and not cost you an arm and a leg.

Graphics Card

A graphics card is a computer that has a processor, called a GPU, which performs the complex computation necessary to build images for display on your monitor. The GPU also has a memory chip that stores completed images and information about which pixels need changing, such as color and location.

A CPU sends instructions to the GPU as to what needs to be displayed on the screen, and the graphics card executes them quickly. This makes it possible for the graphics card to create images and graphical output very quickly, which is especially important when rendering in 3D.


The GPU’s specialized processing abilities are useful for many different applications, including video editing, gaming, and 3D design software like AutoCAD. The GPU’s specialized compute capabilities allow it to efficiently parallelize tasks, making it possible for CAD and other graphics-intensive programs to take advantage of the huge amount of floating point operations a modern GPU can process in one second.