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Questions tagged [pae]

PAE stands for Physical Address Extensions. It's a memory address extension that enables support of greater than 4 GB of physical memory for 32-bit processors.

PAE is actually supplied by Intel for most 32-bit (IA-32) Intel Pentium Pro and later platforms.

PAE by Microsoft
PAE on Wikipedia

36 questions
58
votes
2 answers

When do I have to use PAE/NX?

I would like to know when I need to use PAE/NX and when I don't. Do I always need it, or can I not use it on my virtual machine?
Winnie The Pooh
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37
votes
10 answers

How can I enable PAE on Windows 7 (32-bit) to support more than 3.5 GB of RAM?

I know that Windows XP 32-bit can be configured, through PAE, to support more than 3.5 GB of RAM. Is there a good tutorial to do this with Windows 7 32-bit? As to why I don't simply use 64-bit Windows 7: The software for my Internet connection…
Niphoet
  • 767
14
votes
6 answers

Windows XP + PAE + 6GB RAM: See more than 3.5GB?

Firstly let me say I've seen a number of similar questions on SuperUser, and I don't think this is a duplicate. (Most address 4GB RAM installed. I have 6GB) I have Windows XP 32-bit running on a i7-based Xeon system with 6GB of RAM. I only see…
nonot1
  • 1,669
11
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10 answers

8GB RAM on XP Professional

I recently installed 8GB of RAM onto a quad core workstation (HP xw8600) running Windows XP Pro (32-bit). I added the /PAE switch in the boot.ini file, but the SysInfo is saying 3GB total memory still. Is Windows recognizing the extra memory? Is…
Brian Faircloth
10
votes
5 answers

What happens when you install > 4GB of RAM in a computer with a 32-Bit OS?

So I'm a programmer and I'm not a complete idiot so I know exactly why you can't access memory where you can't have pointers. But I've never tried this and I don't think I ever will because it seems like a big waste of money/time. I'm just…
Peter Turner
  • 1,242
8
votes
3 answers

Error 0xc0000260 when installing Windows 8 Consumer Preview on an old laptop

I'm attempting to install Windows 8 Consumer Preview on a Dell Inspiron 8600, and I am getting a 0xc0000260 error. Googling around, I found that others get this error when installing on a Virtual Machine without the PAE/NX checkbox enabled. I'm…
jrr
  • 201
5
votes
6 answers

How to check if PAE is enabled? (Windows 7 32 bits)

How to tell for sure if PAE (Physical Address Extensions) is enabled or not? There is a SPECIFIC command I can use? I can read a registry value or something? (Windows 7 32 bits) I have found this on Internet but it doesn't answer my question: If…
GoUkraineGo
  • 2,171
4
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6 answers

Bypass PAE, NX, and SSE2 upgrade requirements from Windows 8 to Windows 8.1

On one of my old computers I am having the problem of upgrading to windows 8.1 because my computer does not support PAE, NX, and SSE2. How was I able to install Windows 8 in the first place? I heard the original requirements for windows 8.0 were…
Jonathan
  • 209
4
votes
3 answers

PAE benefits to threaded programs in a 32-bit Windows system

If I have a system with more than 4GB of RAM, and PAE enabled (on a 64-bit CPU), will a threaded 32-bit application be able to use 4GB total, or 4GB per thread? I ask because I am running DAW (digital audio workstation) software which is only…
gjsmo
  • 210
3
votes
1 answer

negative effect of running PAE kernel?

Fedora, and other distros install a PAE kernel if the hardware supports it. Are there any negative effect on running a PAE kernel on a machine with less than 3-4Gb ram ?
nos
3
votes
4 answers

Will the performance of my Laptop increase if I migrate from Ubuntu 14.04 32 bit to 16.04 64 bit?

I have i5-3230M CPU @ 2.60GHz processor and 8GB RAM in my Thinkpad T530 laptop. Normally I have 6-7 pinned (gmail, whatsapp, slack, keep etc) and up to 10 open tabs in Chrome, virtualbox with vagrant, PhpStorm IDE, Firefox with few open tabs.…
Alexey Demin
  • 133
2
votes
1 answer

OOM killer despite lots of free memory on PAE kernel

We have an application server which for legacy reasons still runs on 32bit kernel with PAE (Ubuntu 12.04 LTS). The server has 24GB of RAM, as seen in the output of free: $> free -lmt total used free shared buffers …
Stefan Seidel
  • 10,855
2
votes
3 answers

32 bit windows max ram with discrete graphics card

I understand that if I have an integrated graphics and 4 gb of ram, windows 7 needs to address some of it o the integrated ones. However how come if I have a discrete graphics card with 1 gb of vram, the os can only see about 2.8 gb of ram? Is this…
agz
  • 8,438
2
votes
2 answers

Is the Win7 32-bit kernel still able to use 2 GB with a Large Address Aware program running?

I'm currently running Windows 7 Professional 32-bit with 6 GB of RAM. I use a PAE patch to enable use of more than 3.5 GB of RAM in 32-bit Windows. A similar discussion took place here: How can I enable PAE on Windows 7 (32-bit) to support more…
White Phoenix
  • 1,381
2
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3 answers

Ubuntu 10.04 32-bit - How to check if kernel is PAE-enabled?

I know that 32-bit 10.04 enables PAE on installation when it detects 3+ GB RAM, but I'd like to know a way to manually check (i.e. in the terminal) that PAE is, in fact, enabled.
William
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