PAE activation

[Jueves]

I have 4gb of RAM memory and of course windows only recognice 3.25gb, I whant to activate PAE, I have done many tests without any result. do you have any advice?

[Budwise]

as far as i know you are stuck with what you got until MS fixes PAE. Your option is a 64 bit operating system...

[GripS]

Windows XP 32bit will not see all 4gb's of RAM no matter what you do. You'll have to run XP64bit or Vista.

[Swarm dude]

I think the maximum you will get is around 3.75 GB, even with PAE activated...
The only solution is 64 bit XP or Vista 64 bit if you want to utilise all of your RAM. Or you can live without couple of hundred of MB's not being used on the XP :p:
Although, there are 32 bit systems that can use more than 4 GB, but those are enterprise systems (Windows Server 2003 Enterprise Edition, and beyond).
What exactly did you do to activate PAE, and that doesn't work?

[Jueves]

I have edited the boot.ini: these are the tests I have done:

1.-
[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOW S
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /NOEXECUTE=optin /fastdetect /pae

2.-
[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOW S
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /fastdetect /pae

3.-
[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOW S
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /pae /fastdetect

Is Xp 64 slower than XP 32?

[Truckchase!]

PAE is for servers only. Don't use it, it will result in lower performance overall.

http://www.microsoft.com/whdc/system/platform/server/PAE/pae_os.mspx
http://www.microsoft.com/whdc/system/platform/server/PAE/PAEdrv.mspx

PAE was mainly created as a stopgap solution for database servers until 64bit support was mainstream. It can't ever really be "fixed". It's a hack to emulate 48 bit addressing on a flat 32 bit space.

My gaming benchmarks have shown no noticeable performance increase or decrease in 64bit. ( +/-2% vs. of course 32bit)

[Jueves]

Ok, thank you very much, I wish I will not have prolems with drivers or other software.