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Dell makes 281 different laptop models that are certified for Ubuntu Linux:
https://certification.ubuntu.com/des...p&vendors=Dell
And Dell makes 18 different laptop models that are certified for Red Hat Enterprise Linux:
https://access.redhat.com/ecosystem/...ategory=Laptop
Unfortunately the Studio XPS 1640 isn't on either of those lists. However, just because your computer is not
certified doesn't necessarily mean Linux is impossible. You may very well be able to install Linux on your XPS 1640. You might find that it runs well overall, but has problems with some of the individual hardware components; for example Dell wireless can sometimes be problematic in Linux, or you might have problems getting your Radeon graphics to display the correct resolution. These problems are usually solvable, with a bit of research.
My recommendation is to create a Live USB of a popular, user-friendly Linux distribution, such as Ubuntu or Mint. Boot it in "live" mode (try without installing) and evaluate its performance on your hardware. Thoroughly test the wifi, webcam, audio, video, suspend/resume, and other hardware features that are important to you. If you decide you aren't happy with Linux, you haven't made any permanent changes, so you can continue using Windows as before. Live USB's are a great no-risk way to test whether or not Linux is the right choice for you.