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Before downloading, there is an option to choose 32 bit or 64 bit, but It says only newer PC's. Can I still install this OS on my old 64 bit PC?

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  • What is the make/model of your older PC? The 64-bit versions run on anything that supports the x64 architecture (also known as x86-64 or amd64). The older IA-64 (Intel Itanium) is a different architecture and is not instruction-set compatible. As long as your PC has the right chipset, it'll work - 'newer' is a relative term.
    – Aaron D
    Sep 10, 2013 at 4:57
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    @roger Probably. If your old 64-bit PC doesn't have much RAM, the 32-bit version might perform better. See What are the system requirements for each flavor of Ubuntu Desktop? to check to make sure your system meets the system requirements in all ways. (We may close this as a duplicate of that.) You'll likely want the 64-bit version, but see What is the difference between 32-bit and 64-bit and which should I choose?, and this. If you want a lighter system, see this.
    – Eliah Kagan
    Sep 10, 2013 at 4:59

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Strange question. Yes, of course, you can install 64-bit Ubuntu to 64-bit PC (if it meets other requirements, of course). And if you think it is old this does not mean that it is really old. The newer word in this case means that 64-bit architecture is slightly younger than 32-bit, that's all.

Other Requirements:

  • AMD64 CPU
  • 1 GB RAM
  • 5.4 GB Free Space on hard drive
  • (Recommended) Internet connection
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