Some applications have large hard disc requirements when working in certain modes designed for handling large images. Memory Most applications need available RAM of 2-3 times the uncompressed image size. This is for the image, undo information and working space. More complex operations will tend to increase the amount of RAM required. Most current graphics adapters offer a reasonable degree of display acceleration as usual more speed generally means higher cost.
Software Ensure the application is compatible with the operating system in use.
All applications should come with a specification for hardware and software requirements. Check these against any hardware and software in place or to be bought. It is advisable to work to suppliers 'recommended requirements', rather than 'minimum requirements' . Isis standards for scanners etc. Expected learning curve.