up to 4 gigs
A 32-bit OS can only address up to 4GB of memory.
4 Gigabytes
It isn't an issue of advantages, it is an issue of compatibility with your computer. The 64 bit operating system can take full advantage of the capabilities of a 64 bit microprocessor, if your computer has a 64 bit microprocessor. However a 64 bit operating system will not run at all if your computer has an older 32 bit microprocessor; you will have to use a 32 bit operating system on that computer.
Running a 32-bit operating system limits you to approximately 4 GB of RAM. A 64-bit operating system can address far more memory (more than is actually possible to put in a computer at this point in time). Assuming your system has less than 4 GB of RAM, and you don't have any 64-bit applications you want / need to run, there aren't any real disadvantages. As computers that support more memory become cheaper, however, you'll be able to use less and less of the available functionality.
No.
A 32-bit OS can only address up to 4GB of memory.
2GB
32 bit operating systems can only address 4GB of memory 64 bit operating systems can address 4 petabytes of memory(1 048 576 gigabytes).
You can upgrade it to a maximum of 4 GB, and it requires a 64 bit operating system.
32-bit operating systems can only address as much as 4GB(2^32) of memory. 64-bit operating systems can address much more than 1TB(over 1000 GB). However, windows is limited as to amount of ram it can use, so people will have reasons to buy next system.
1 byte for 1 index item in 16-bit operating system
a 32-bit OS is limited to 4 Gigabytes of ram
A 64-bit operating system can directly address more memory. This makes it "better" if you have more memory than can be addressed in 32 bits ... 4 GB. If you have 4 GB of RAM or less, there's essentially no difference, and the 32 bit system may even be slightly faster.
4 Gigabytes
The valid bit in a page table indicates whether a page is currently in use or not. It impacts the functionality of the page table system by helping the operating system efficiently manage memory. When a valid bit is set, it means the page is in use and can be accessed by the CPU. If the valid bit is not set, it indicates that the page is not currently in memory and the operating system needs to retrieve it from secondary storage. This helps prevent unnecessary memory accesses and improves system performance.
Your processor.
upto 4 gb of ram on a 32 bit operating system xp