You don't have to buy something on the list, but if you have problems when running supported hardware, Siemens support can and will help you resolve the issues.
Do not use the Intel integrated graphics as it will slow you down and is not certified. Go with any Nvidia chip/board so it is doing the OpenGL processing.
Fastest processor you can justify.
256GB Solid State Drive for your primary drive, unless using this as a standalone laptop, then maybe 512GB
512GB-1TB hd for storage
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