Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I am currently running Windows 7 32-bit. I want to install Windows 8 Developer Preview 64-bit. Is it possible to install it with my existing Windows 7(32-bit) or is there any way to install Windows 8 developer preview 64-bit virtual on 32-bit PC or is there any to check if my PC is good for 64-bit OS.

I am having Intel Core 2 duo CPU E5300 2.60Ghz Processor, 2GB RAM.

share|improve this question

migrated from stackoverflow.com Jan 1 '12 at 11:03

This question came from our site for professional and enthusiast programmers.

It's been a LONG time since I've seen a CPU that doesn't support x64. –  surfasb Jan 1 '12 at 11:09
What hardware do you have? –  David Schwartz Jan 1 '12 at 11:13

5 Answers 5

Is your CPU 32-bit, or just your current install of Win7? Regardless, you won't be able to install/run 64-bit software from within a 32-bit runtime. This would most likely rule out the ability to perform an "upgrade install" as well.

A 32-bit operating system will boot/run the CPU in "protected mode", while 64-bit software requires that the CPU operate in "long mode". In short, you need to install from a native 64-bit runtime. Which you should be able to do by booting from the Win8 install disc, assuming your CPU is 64-bit capable.

share|improve this answer

The CPU does use a 64-bit instruction set: http://ark.intel.com/products/35300/Intel-Pentium-Processor-E5300-%282M-Cache-2_60-GHz-800-MHz-FSB%29

So just install the OS according to it's normal instructions, though, with a Pentium-class processor, your experience will be far, far from optimal.

share|improve this answer
VMware and VirtualBox both support running 64-bit guests in a 32-bit host OS, provided the CPU itself is 64-bit-capable. –  Wyzard Jan 26 '12 at 22:19
Oh, good to know. I'll update to reflect. –  music2myear Jan 26 '12 at 22:22

To check whether or not your PC is "good" for a 64-bit OS, you'll have to find out which CPU you have, which you can do with System Properties (hit WINDOWS KEY+PAUSE).

Then look up the CPU that you're using and see if it supports x86-64.

If it does (most modern CPUs do) then you're good to go.

However, upgrading from a 32-bit OS to a 64-bit OS (even on a PC that supports 64-bit operating systems) is not supported as far as I know.

share|improve this answer

If you have 2GB or 3GB RAM, even with a 64-bit capable processor, I would install the 32-bit of Windows 8 Pro. It just seems to be more responsive for some reason. Many others have had the same experience.

share|improve this answer
Other than personal experience do you have any metrics to display and argue your answer? –  Lipongo Oct 29 '12 at 22:13

Checking the specs of the computer (Intel core 2 duo) you can certainly install a 64bit operating system. But that doesn't necessarily mean that a 64bit OS is going to run smooth. For it to run smooth you will have to add atleast 2GB more ram ie, total 4GB. Also not more than 4GB as I don't think your PC can support more than 4GB.


You will be able to run a 64bit OS but to make it run smooth you will have to 
add 2GB more ram
share|improve this answer
This is a subjective statement. For example I have Windows 8 running on multiple systems with only 2GB of RAM, and it performs better than any version of Windows since XP. –  Joshua Jun 12 '14 at 16:47
@Joshua This is the preferred system requirements and not just my opinion.You will need 4GB ram only if you are running 64bit version of the OS –  MEAIN Jun 12 '14 at 16:54

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.