Assuming the software is designed correctly, porting form 32-bit to 64-bit should be simple. Simple like you don't have to change anything. 32-bit programs would just ignore half of each register ...

Your new computer has a 64-bit processor, but your software probably is still 32-bit. Why haven't software developers done more about it?

More and more frequently, users are installing the 64-bit version of their operating system of choice over the less capable 32-bit version.

If your version of Windows is 64-bit, you're able to install both 32-bit and 64-bit software programs, so there are two different "Program Files" folders on your computer. However, 32-bit versions ...

Google has announced that it has begun automatically switching those who run the 32-bit version of its Chrome browser on a 64-bit Windows install to the matching 64-bit version as a means of ...

AMD aims to sell millions of the chips to users running conventional 32-bit programs, creating a ready-made market for 64-bit software when it becomes available.