So, first of all, if you want to know the bit system of your machine, you can look through my computer system properties, then you can know if your OS is 32 bit / 64 bit. Also, if you want to know if your machine is capable of 64 bit, in Windows 7, right click on my computer, add performance information and tools at the bottom, and then click view and print detailed performance and system information. There you will find 64 bit capable yes or no.
If no is included, it is capable if yes is included. If not, it is not possible. In short, the 32 bit (Home edition) is generally limited to 4 Gb of RAM. Up to 16 Gb is available in 64 bit (home edition). In 64 bit it is more convenient to use virtual memory when running software that uses a lot of RAM. Most 32 bit software can also run on 64 bit, and 64 bit data transfer rates can be up to twice as fast as 32 bit.