The memory limit is per process. There are various ways that 32-bit
applications that need more than 2GB of memory (which few do) can use
it in 32-bit Windows.

I worked for 18 months with 64-bit Windows 7 at work and 32-bit
Windows 7 at home. I saw no performance difference. I had both 64-bit
and 32-bit Photoshop on the work computer and the only difference I
noticed was that it took much longer for the 64-bit version to load.

The only significant difference was that I could run things at home I
could not run at work. XP Mode had problems. 32-bit Win7 can run
ancient DOS apps, 64-bit can't.

On Mon, Feb 10, 2014 at 12:52 AM, Davis, David <> wrote:
> Personally I wouldn't do it that way - as you then don't get the advantages 
> 64 bit windows offers with being able to address more RAM - in 32 bit Windows 
> you can only use a couple of GB. With a busy PC, big documents, big graphics, 
> video etc you can easily use more than 2GB of memory.
> The pro editions of Windows 7 offer an "XP Mode" for running old applications 
> (Basically it runs them inside a virtual machine of Windows XP - but 
> transparently, once you've set it up, you just click the program's icon to 
> launch it like any other, and it appears to be running in Windows 7, and can 
> access your Win7 filesystem seamlessly).  I've never yet encountered an 
> application that couldn't work in XP mode like this, even 16 bit (!) ones 
> designed to run on Windows 3.1.

> From: Robert Lauriston <>
> Install Windows 7 32-bit rather than 64-bit, fewer potential
> compatibility problems.

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