If wanting to download our v2.03 beta you will be presented with two options to choose from, the one that you select will be dependent on the speed of your processor on your system. 


To find out which one you will need please see the below information from Windows directly.

32-bit and 64-bit Windows: Frequently asked questions


https://support.microsoft.com/en-us/help/15056/windows-32-64-bit-faq