Graphical Processing Unit (GPU) cards are used to accelerate analytical solutions, machine learning and deep learning, and engineering/modeling applications. GPUs are used in parallel with CPUs for processing and advanced computation capabilities which allow certain applications to run faster. The following GPUs are available for deployment in your Rackspace dedicated server:
FTP (file transfer protocol) is a convenient way of uploading and downloading files to and from a server. This requires a program like FileZilla (available free on the net) that you install on your local computer. But you can also use your browser to transfer files by FTP, although it is not as handy as an FTP program. Another advantage of FTP is that file transfer is lightning quick. You can also assign dedicated access rights. An FTP server is available to you, even with a VPS.
The answer to this question largely depends on two factors. Are you new to server technology and not very interested? In this case, Windows is the easiest option to get where you want to go. Do you already have experience with Linux or would you like to familiarize yourself with this operating system? If so, Linux gives you more freedoms to configure your server, and you will be using an operating system that is less vulnerable to attacks from the Internet. Linux is also open source and therefore free.