PS 7 Memory usage

DW
Posted By
David_Who
Mar 31, 2009
Views
482
Replies
6
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Closed
I recently bought a Viao Z550N laptop with 3Gb RAM, XP SP3. In preferences I have selected 75% usage. However, PS 7 sees only 1777 Mb. How can I convince PS that there’s an extra Gig in there?

David
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memory use

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J
Jim
Mar 31, 2009
wrote in message
I recently bought a Viao Z550N laptop with 3Gb RAM, XP SP3. In preferences I have selected 75% usage. However, PS 7 sees only 1777 Mb. How can I convince PS that there’s an extra Gig in there?

David
You are confusing physical memory with virtual memory.
Your system has 3GB of physical RAM. Windows will use all of that which remains after the various controllers have taken their bite. 32 bit operating systems, such as Windows, provide 4 GB of virtual address space. However, Windows must be mapped into this 4 GB; for convenience of programming, user programs can never access more than 2 GB of virtual address space.
PS will tell you that it can access on 1777 MB of virtual address space; the rest is reserved for other programs.

It is correct that the Intel /PAE instructions overcome these limitations, but Windows XP ignores the /PAE switch.

Hence, your system will never provide more than 1777 MB of virtual address space no matter how much RAM you have.

What you gain from having so much RAM is that the system will access the pagefile much less.

Jim
DM
dave_milbut
Apr 1, 2009
each application gets 2 gig in xp.

How can I convince PS that there’s an extra Gig in there?

rafo 🙂 (read and find out):
< http://www.google.com/search?hl=en&safe=off&num=50&a mp;q=%2F3gb&btnG=Search>
DM
dave_milbut
Apr 1, 2009
it occurs to me that it’s possible that ps7 is so old that it won’t see more than 2 gig on it’s own anyway…
B
Buko
Apr 1, 2009
What was the current then OS Windows 2000?
BC
Bart_Cross
Apr 1, 2009
Yep, and the 3Gb switch worked skippy!
DW
David_Who
Apr 2, 2009
Thanks all. Now the question is how much do I want to help the economy out of recession? Well PS7 does everything I ever want to do so maybe not that much. I guess I’ll get along with 2 Gig.

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