32 Bit vs 64 Bit
If you want to see if your OS is 64-bit or not, right click on either "My computer" (Windows XP) or "Computer" (Windows 7) and click properties. If it is 64-bit, it will say 64-bit OS in the description. If the OS is NOT 64-bit, you will need to get the 64-bit version in order to run 64-bit software. A 64-bit OS will not run on 32-bit hardware, but a 32-bit OS WILL run on 64-bit hardware. But, as I said before, any hardware made within the last 5 years is going to be 64-bit anyway.
05/12/2012 11:49 AMPosted by SilvêrI am just wonder if I can play World of Warcraft on a 32 Bit computer, I am currently on my Laptop with 64 Bit but it says my new computer is 32 Bit, Can I download it? If not can I upgrade my computer to 64 Bit?
If you are getting a message that you have a 32-bit operating system installed then you actually do have a 32-bit operating system installed.
The 64-bit client is going through testing, you can use it, but its not really supported.
05/13/2012 07:57 AMPosted by SilvêrSo it said I had 64-Bit OS so that means I will be able to run Mists of Pandaria on it, right?
Um, MOP does not require 64-bit to run. It SUPPORTS it, in the same way that the current live client supports 64-bit if you want to enable it, the difference being MOP will have the 64-bit client available by default (you won't have to download extra files).
But if you have a 64-bit OS/hardware, there is really no reason to not use the 64-bit client.
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