Question about Windows 7?

I have a license of Windows 7 Professional x64 OEM but i am realy thinking to pass to Windows 7 Professional x86,my question would be is it possible to use the OEM license of the x64 version to x86?
PS:Has anyone tried to pass to x86 version?thas it feel the lack of performance?

 

THIS might help you.

Regarding performance - 32 Bit windows can only see/utilize up to ~ 3,15 GB RAM, which means that if you have more installed - it will not be used and is wasted.

 

That's not completely true. There is some kind of trick with PAE (Physical Address Extension) which change a little Windows' memory management. It's just a matter of change registry.
Unfortunately I don't remember where is registry responsible for enabling PAE :/

PS: Of course it's not as much effective as using native 64-bits OS.

EDIT: PAE is not supported by 64-bit Windows

 

No it's not true windows 7 professional could use max 4 GB please look at this click here

 

What exactly am I supposed to be looking at? From your link:



And this is only if you tweak PAE (Physical Address Extension).
Otherwise < 3.5 GB.

My point was that if you have more than 4GB installed on your system, it is a waste of RAM to downgrade to 32bit.

And why would you want to do that if I may ask?

 

No, Windows 7 can ADDRESS 4gb max. Some of that address space is used by the BIOS, some is set aside to address I/O devices, some is set aside for the Video adapter. So NO it cannot USE 4gb of memory. The 3+gb number is much closer to reality. And PAE is pretty much useless. It only enables a small additional amount and even then only to apps that SPECIFICALLY recognize that fact.

Gary

 

What should you look at is that W7 pro can see 4GB of RAM max not 3.15 or 3GB i want to move to x32 because its more comfortable for me that's all and because i have some software failures with x64

 

I think the above information should answer your question and theory, Profy_X

 

So you could make x86 see 4GB but it's not sure if he use them...

 

It will use 3 to 3.5 GB.

 

Would it work if you downloaded the Windows XP mode? If you only need it for software compatibility then I think that might help. Other than that, there are no benefits of 32 bit, it shouldn't be any more "comfortable" than 64 bit unless you're referring to software/hardware compatibility. But to answer your question, yes the same serial key can be used for both versions