In the following table, the increased maximum resources of computers that are based on 64-bit versions of Windows and the 64-bit Intel processor are compared with existing 32-bit resource maximums.

Architectural component	64-bit Windows	32-bit Windows
Virtual memory (RAM)	16 terabytes	4 GB
Paging file size	512 terabytes	16 terabytes
Hyperspace	8 GB	4 MB
Paged pool	128 GB	470 MB
Non-paged pool	128 GB	256 MB
System cache	1 terabyte	1 GB
System PTEs	128 GB	660 MB

Source: http://support.microsoft.com/default.aspx?scid=kb;en-us;294418

As can be seen in this table, all the components of memory are increased in the 64-bit system over the 32-bit system. It is important to realize that 64-bit processing does not inherently produce increased memory sizes; it enables and requires them. 64 bit addressing increases the possible space of addresses, but the size of each address doubles too! Exploiting the advantages of 64 bit computing requires that hardware developers add memory; a partial 32-bit model, widely employed today, is an effective way to limit the memory requirements of a computer while increasing its power.

Other advantages of 64-bit systems include the ability to map large files to memory (transfer from disc to memory), and cache and swap large quantities of data in fewer clock cycles.