While most users have been shifted towards 64-bit Operating systems, still there are some users/Organizations who are using 32-bit operating system. Now, Nvidia has decided to stop the driver support for 32-bit operating systems and that will impact operating systems like Microsoft Windows 7, Microsoft Windows 8/8.1, Microsoft Windows 10, Linux, FreeBSD.
Nvidia is launching Version 390 in january 2018 and with this launch company is ceasing the 32 bit driver support.
It is clear that 64-bit operating system have more security feature than 32-bit OS. Basically these numbers are dependent on the processors. The contemporary 64-bit processors can handle 1Tbyte of memory in practice while extended 64-bit processors can handle 16Ebyte of physical memory within the flat memory model. Which is much bigger in amount that 32-bit processors.
64-bit processors uses large number of register sets with more capacity than 32-bit processors. Large number of registers means handling more instructions all together.
So if you are running your computer on 32-bit and using Nvidia GPU then this is the time to upgrade your computer before it stops the driver support.