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Simply like the title says is the windows 8 upgrade 32 bit or 64bit? the one that you get with the upgrade assistant?

Or is it dependent on the the system I am using to download it? 32bit system gets 32bit Windows 8, 64bit gets 64bit Windows 8?

Clarification would be greatly appreciated...

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Which OS are you right now on? –  AbhishekGirish Oct 26 '12 at 21:42
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32, but I would like the 64bit so I can fully use my 4gbs of ram... –  TheX Oct 26 '12 at 21:42
    
My answer below has some details.. –  AbhishekGirish Oct 26 '12 at 21:47
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The only correct answer to this question is both, you get a single license, for either one. –  Ramhound Oct 26 '12 at 21:49
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2 Answers

up vote 5 down vote accepted

This website has all the details you need: Upgrade to Windows 8

Can I upgrade from a 32-bit version of Windows to a 64-bit version of Windows 8? Yes, but you can't do this using Upgrade Assistant. If your PC has a 64-bit capable processor (CPU) but is currently running a 32-bit version of Windows, you can install a 64-bit version of Windows 8, but you'll need to buy Windows 8 as a DVD.

You also won't be able to keep any files, settings, or apps when you upgrade from a 32-bit to a 64-bit version.

I suggest you download and run the Upgrade Assistant. It would suggest what's right.

It provides the option to buy, download, and install Windows 8. If your PC is ready to go, Upgrade Assistant provides a recommendation on which edition to buy, and walks you through the steps to upgrade.

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So if I boot into a 64bit version of Windows (which I have windows 8 preview 64bit installed) then it will download the 64bit version? –  TheX Oct 26 '12 at 21:45
    
It would suggest you what version is supported and recommended. You can then choose to download –  AbhishekGirish Oct 26 '12 at 21:46
    
Note that there is no official upgrade path from Windows 8 Consumer/Release Preview to Windows 8 RTM - social.technet.microsoft.com/Forums/en/w8itproinstall/thread/… –  AbhishekGirish Oct 26 '12 at 21:49
    
After you complete the Upgrade Assistant, visit Download Windows 8 Enterprise 90-Day Evaluation. It sounds stupid, but download the 64-bit evaluation-only product (expires Aug 2013), and install that just for the short length of time you need to download your ACTUAL new paid-for Windows 8 from [Windows Order Summary](mswos.com). This way, you are riding a 64-bit OS at the time you initiate the download. Or download it on any friend's 64-bit Windows system and walk the USB stick with your treasure back to your own system to install it. –  zero2cx Nov 5 '12 at 4:40
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From the Upgrade to Windows 8 page

Can I upgrade from a 32-bit version of Windows to a 64-bit version of Windows 8?

Yes, but you can't do this using Upgrade Assistant. If your PC has a 64-bit capable processor (CPU) but is currently running a 32-bit version of Windows, you can install a 64-bit version of Windows 8, but you'll need to buy Windows 8 as a DVD.

You also won't be able to keep any files, settings, or apps when you upgrade from a 32-bit to a 64-bit version.

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