As usual - it depends. For normal operations, you will hardly ever use the paging file given your 4GBs of RAM. If, however, you do operations that use a lot of RAM (complex graphics, CAD for example), a page file of 1.5 times RAM may be useful.
Have a look into your Resource Monitor > Memory tab and check whether you have any "Hard Faults" - if not, that means your page file is not at all being used. Even if there is a small number, it is hardly being used.
PS: You need no page file on a data partition.