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Windows 7: Is a 64-bit Windows 7 quicker than 32-bit in itself, as an OS?

06 Oct 2012   #11
SHUBHAM BANSAL

Windows 7 Ultimate 32bit
 
 

I have 3Gb of RAM and nVidia Graphic card of 256 MB and Intel(R) Core(TM)2 Duo CPU P7350 @ 2.00Ghz 2.00GHz. I am still using Windows 7 Ultimate 32bit.

Do I upgrade to 64bit or not? If not plz tell why?


My System SpecsSystem Spec
.

06 Oct 2012   #12
SHUBHAM BANSAL

Windows 7 Ultimate 32bit
 
 

I have 3Gb of RAM and nVidia Graphic card of 256 MB and Intel(R) Core(TM)2 Duo CPU P7350 @ 2.00Ghz 2.00GHz. I am still using Windows 7 Ultimate 32bit.

Do I upgrade to 64bit or not? If not plz tell why?
My System SpecsSystem Spec
06 Oct 2012   #13
SHUBHAM BANSAL

Windows 7 Ultimate 32bit
 
 

I have 3Gb of RAM and nVidia Graphic card of 256 MB and Intel(R) Core(TM)2 Duo CPU P7350 @ 2.00Ghz 2.00GHz. I am still using Windows 7 Ultimate 32bit.

Do I upgrade to 64bit or not? If not plz tell why?
My System SpecsSystem Spec
.


06 Oct 2012   #14
ignatzatsonic

Microsoft Community Contributor Award Recipient

Windows 7 SP1, Home Premium, 64-bit
 
 

Quote   Quote: Originally Posted by SHUBHAM BANSAL View Post
I have 3Gb of RAM and nVidia Graphic card of 256 MB and Intel(R) Core(TM)2 Duo CPU P7350 @ 2.00Ghz 2.00GHz. I am still using Windows 7 Ultimate 32bit.

Do I upgrade to 64bit or not? If not plz tell why?
I wouldn't. Why would you consider it?

Why do you refer to it as an "upgrade"? It would be a change, not necessarily an upgrade.

If you found that some of your applications no longer worked, you might consider it a downgrade.

Most applications will work with 64-bit, but there's no obvious advantage in day to day usage.

I changed---only because one of my applications would not even install on a 32-bit system.

If you ever add more RAM and in fact actually use more RAM, then consider moving to 64-bit.

Sooner or later, you will be forced to change. Worry about that then.
My System SpecsSystem Spec
06 Oct 2012   #15
SHUBHAM BANSAL

Windows 7 Ultimate 32bit
 
 

Thanks and Tell me Enterprise Edition has more features than the ultimate edition.
Plz
My System SpecsSystem Spec
06 Oct 2012   #16
ignatzatsonic

Microsoft Community Contributor Award Recipient

Windows 7 SP1, Home Premium, 64-bit
 
 

Quote   Quote: Originally Posted by SHUBHAM BANSAL View Post
Thanks and Tell me Enterprise Edition has more features than the ultimate edition.
Plz
Enterprise does not have more features. It activates differently.


Ultimate is a single user license. Enterprise is for volume licenses.
My System SpecsSystem Spec
06 Oct 2012   #17
SHUBHAM BANSAL

Windows 7 Ultimate 32bit
 
 

thnkx
My System SpecsSystem Spec
06 Oct 2012   #18
GeneO

Windows 7 64 bit SP1. EFI boot partition, full EFI boot.
 
 

Quote   Quote: Originally Posted by gregrocker View Post
I lean toward 32-bit with 4gb RAM because it seems faster and almost always does use all of the RAM since some RAM is apportioned to hardware.

This can be determined by typing Resource Monitor into Start button Search Box, click on Memory tab.
RAM isn't apportioned to hardware with 32 bit windows, virtual address space is. RAM is actually wasted. The RAM addresses that the PCI hardware memory is mapped to can't be used by the system with 32 bit OS, so it is lost. With 64 bit OS, the hardware can be mapped to addresses beyond the physical RAM, so all RAM can be used.
My System SpecsSystem Spec
06 Oct 2012   #19
gregrocker
Microsoft MVP

 

Interesting GeneO.

What about the Hardware shown below on this older laptop which it says is reserved for Physical Memory?


Attached Thumbnails
-capture.png  
My System SpecsSystem Spec
07 Oct 2012   #20
GeneO

Windows 7 64 bit SP1. EFI boot partition, full EFI boot.
 
 

Quote   Quote: Originally Posted by gregrocker View Post
Interesting GeneO.

What about the Hardware shown below on this older laptop which it says is reserved for Physical Memory?

But it isn't physical memory no matter what windows says, it is the virtual address space that is being used by the device. If you had 64 bit windows and memory/hole remapping in the BIOS, you would get that memory back.

It basically works like this. Windows uses virtual addresses that are mapped to physical devices like RAM or the PCI bus. The PCI i/o region has been mapped to the top of this 4GB virtual addresses space and when those virtual addresses are accessed, the memory management hardware translates them to PCI addresses. So you writing to those upper addresses writes over PCI. Drivers expect this. Since 32 bit windows has only 4GB of virtual address space available, this PCI address range cannot be mapped to physical memory. So in a sense it is hardware reserved.

With 64 bit OS this 4GB limitation for virtual addresses is not there. The PCI addresses are still mapped to the top 4GB of the virtual addresses range, so there is a hole in the physical RAM mapping. However, physical RAM does not have to be mapped contiguously to virtual addresses, so the remapping hardware maps that hole in the RAM to virtual addresses beyond the 4GB., so all of your RAM is available.

Now in your case, I believe that physical memory is really being used by a device since you only have 2GB installed. So all physical RAM plus device mapped memory fit in 4GB range. However if you have 4GB or more of RAM, in general you will not be able to access all of your RAM due to the PCI hole.
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 Is a 64-bit Windows 7 quicker than 32-bit in itself, as an OS?




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