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Hardware-wise:

Technically, the bit size of a computer can refer to several things, such as the size of its CPU instructions or the amount of data the CPU can read from memory.

This is ok, but what is a 32 bit or a 64 bit process?

What are the technical differences between them? Why would I bother running IntelliJ IDEA in 64 bit but not 32 bit? What changes?

Koray Tugay
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  • @gronostaj I do not think so.. – Koray Tugay Mar 19 '15 at 15:33
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    @KorayTugay - What questions are still unanswered after you read that question's answers. – Ramhound Mar 19 '15 at 15:49
  • @Ramhound Is it only about addressable memory? – Koray Tugay Mar 19 '15 at 16:00
  • @KorayTugay - Your questions are really broad. So much so a Wikipedia article explains the differences. So I am trying to understand where your knowledge starts and ends. So its important to understand how the existing question doesn't help answer your questions. – Ramhound Mar 19 '15 at 16:05
  • I am more then willing to answer your question. I just have to understand what your question is and how its not a duplicate of an existing already answered question. – Ramhound Mar 19 '15 at 16:28
  • @Ramhound My question is: Sometimes an application will have 32 bit and 64 bit versions. What possible differences there can be? Only memory space the app uses? – Koray Tugay Mar 19 '15 at 18:42
  • One huge difference is that a 64-bit process has the capability of using more memory compared to a 32-bit process which is limited to only 2GB unless Windows is started with a special flag indicating a process can use more but still limited to less then 4GB. – Ramhound Mar 19 '15 at 19:04
  • @Ramhound And thats it? – Koray Tugay Mar 19 '15 at 19:24

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