I've found that MikTeX now have both x86 and x86_64 version.

What's the difference between them? Are there are some limitations in the x86_64? Or they are completely interchangeably?

3 Answers 3


The MiKTeX 64-bit distribution is considered experimental, i.e., not ready for production use, according to the developer. He wrote this on his blog Mai 11, 2011, and did not state otherwise yet. In his newest blog post he said that he's testing MiKTeX 2.9 64-bit with Windows 8.


There are no significant performance differences between the x86/64 versions of MiKTeX. But between MiKTeX and TeX Live, particularly with including, scaling and other operations on pdf pages.

And there is no biber in MiKTeX 64.1

  1. As of summer 2015, 64-bit MikTeX also includes Biber in its repositories.
  • As of now, Biber is available also for 64-bit MikTeX.
    – moewe
    Commented Sep 20, 2015 at 6:44

They are the same but you have to know if you system is 32 or 64 bit. This is the difference.

  • 1
    If you have a 64bit system, you can use either of them. Has anybody got an idea whether there are compatability issues or if the 64bit version is significantly faster? Commented Jan 8, 2013 at 16:33

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