32 bit programs 3 gb each?

[windows7Seven7]

If i am running several 32 bit programs in windows 7 64, do they all share the first 3 gb (or 4), or can they each access the 3gb max for 32 bits.

a
thanks

 

[whs]

Are you saying that these programs need 3GB of RAM each in order to run? That would be unusually big. What are those programs - games? In any case, the system loads them into RAM one after the other and if all RAM is taken, it pages out some other stuff. That will, of course, slow your system down.

 

[windows7Seven7]

so for instance premier elements is a 32 bit program. it can only use 3-4 gb. But if i am also running photoshop elements organizer, and photoshop elements, each is 32 bit. so you are saying each can use 3-4 gb of memory, that a 32 bit program could use?

 

[DeVandal]

Apps will share the available memory in accordance with Windows Memory Management. If physical RAM is unavailable, the pagefile will be utilized.

 

[windows7Seven7]

so in a sense, 32 bit applications may run faster on a 64 bit system because a 32 bit sytem with available 3.? gb, must share that with windows, the applications (such as adobe premiere elements), and task manager, .....

but with 64 , it can grab the max that 32 bit allows...

 

[whs]

A 64bit system will run better if you have more than 3GBs of RAM. It does not really matter whether that is a 32bit or 64bit program.

 

[wds7]

A 64bit system will run better if you have more than 3GBs of RAM. It does not really matter whether that is a 32bit or 64bit program.

+1 ...If it can run ..
better .? maybe .

 

[windows7Seven7]

Actually, if you are running a 32 bit program in windows, it can only use about 3.5 gb. even if you have 96 gb, it will not run better then if you have 4 gb.

 

[whs]

Actually, if you are running a 32 bit program in windows, it can only use about 3.5 gb. even if you have 96 gb, it will not run better then if you have 4 gb.

I think you are confusing a few things.

 

[pparks1]

It's really only 64-bit apps that benefit from 64-bit...and only certain ones that take advantage of really large datasets. While I'm not against running 64-bit, I don't expect most people will see a lick of difference from a performance standpoint.

 

[pallesenw]

or can they each access the 3gb max for 32 bits.

Yes, they get 2GB each. They can each grow to 4GB, if they are compiled for it.

 

[windows7Seven7]

thanks

 

[logicearth]

All 32 bit programs that are Large Address Aware will get 3 GB of virtual memory, otherwise only 2 GB for those that are not. Please watch: https://msmvps.com/blogs/gdicanio/a...-management-revealed-by-mark-russinovich.aspx

 

[pallesenw]

It is 4GB when executed in a 64bit environment

 

[kado897]

I think the OP is referring to the fact that 32 bit programs can only address a maximum of 2 or 4Gb. This is the address range of that program. In a 64 bit windows they could be loaded anywhere within windows address range so they each have their own 4Gb maximum.

 

[logicearth]

It is 4GB when executed in a 64bit environment

I think the OP is referring to the fact that 32 bit programs can only address a maximum of 2 or 4Gb. This is the address range of that program. In a 64 bit windows they could be loaded anywhere within windows address range so they each have their own 4Gb maximum.

The Virtual Address Space is 3 GB for each process when using a 32 bit program on a 64 bit edition of Windows. However, it will only see 3 GB if it is Large Address Aware, then it will only see 2 GB for its Virtual Address Space.

A 64 bit program can have an 8 TB Virtual Address Space.

References:
Virtual Address Space (Windows)
Virtual Address Space (Windows)

The Virtual Address Space does not equate to Physical Memory. You can have 3 GB or more on Virtual Address Space while only having 1 GB of Physical Memory.

 

[pallesenw]

The link is about 32bit Windows.

Comparison of 32-bit and 64-bit memory architecture for 64-bit editions of Windows XP and Windows Server 2003

"Applications that are compiled with the /LARGEADDRESSAWARE option, as would be required to take advantage of the /3GB switch in 32-bit Windows, will automatically be able to address 4 GB of virtual memory without any boot time switches or changes to x64 Windows. Plus, of course, the operating system does not have to share that 4 GB of space. Therefore, it is not constrained at all."

 

[DeaconFrost]

so for instance premier elements is a 32 bit program. it can only use 3-4 gb. But if i am also running photoshop elements organizer, and photoshop elements, each is 32 bit. so you are saying each can use 3-4 gb of memory, that a 32 bit program could use?

As a better suggestion, take a look at how much memory those apps are actually using. Chances are, you are going way overboard with your concerns, and don't need to worry one bit about how they will run.

 

[kado897]

so for instance premier elements is a 32 bit program. it can only use 3-4 gb. But if i am also running photoshop elements organizer, and photoshop elements, each is 32 bit. so you are saying each can use 3-4 gb of memory, that a 32 bit program could use?

As a better suggestion, take a look at how much memory those apps are actually using. Chances are, you are going way overboard with your concerns, and don't need to worry one bit about how they will run.

Good point. Don't worry unless you have a problem.

 

[DeaconFrost]

To clarify, let's say those apps are using 600 MB of memory all together. It isn't going to matter if you have 3 GB or 4 GB, or if the system is running the x86 or x64 platform. If all other variables are the same (meaning processor, hard drive, etc), those apps will run identically.