My Main machine is 64 bit
All my software inc O/S is 32 bit
Dont kid yourself that you will see a difference- you probably will not.
Any processing speed difference is to you and me is hypothetical- its there but you wont notice..
To bring this further to clarification
My first venture into computering was 25 years ago with an ATARI ST series machine
ST stood for 16/32
Software written in machine code for 16 bit and pushed trough a 32 bit system-
Blistering fast for Word processing and Graphics even up to 4 series Intel chips.