Processor
CATIA relies primarily on CPU single thread performance for 2D design and 3D modelling work. This means you should focus on CPU frequency (GHz) for your workstation.
If your workflow involves a lot of rendering and simulation, additional cores would be advantageous.
Memory
The amount of memory you will need depends on how many programs you will have open at any given time alongside CATIA, and how large the files are that you will be working with.
A good starting point in deciding how much RAM you should go for would be to check your current usage via Windows Task Manager.
Graphics Card
CATIA makes use of both CPU and GPU. Unlike many other CAD programs, CATIA requires a workstation grade GPU, such as a Nvidia Quadro. With a consumer grade GeForce card, you will experience glitching, and certain functions may not work at all.
Storage
In the past, computers were held back by slow mechanical hard drives. Unless you are storing files which are not accessed too often, in which case mechanical hard drives might be a better choice, Solid State drives should be used for everything else. Having everything stored on SSDs means you’ll be able to copy, move, open and save files quickly and PC and program start times will be reduced.
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