Kernel - PAE vs. non-PAE

[Shannon McMackin]

On 06/30/2009 11:51 PM, Steven F. LeBrun wrote:
> On 06/30/2009 11:06 PM, Shannon McMackin wrote:
>> On 06/30/2009 09:27 PM, Steven F. LeBrun wrote:
>>> When I installed F11 on my Toshiba laptop, it installed the PAE version
>>> of the kernel. I am assuming that my laptop has a CPU with Physical
>>> Address Extensions functionality and can therefore address up to 64GB of
>>> memory.
>>>
>>> My laptop only has 3 GB installed. Can anyone explain the pro's and
>>> con's of using the PAE version of Linux kernel instead of the non-PAE
>>> version?
>>>
>>> Would the PAE version of the 32-bit Linux Kernel see 4 GB of memory if
>>> it was installed where Vista 32-bits only sees about 3GB? For that
>>> matter would the non-PAE version see the full 4 GB?
>>>
>>> --
>>> Steven F. LeBrun
>>>
>>> Quote: /"There are 10 types of people in this world, those that
>>> understand binary and those who don't."/
>>>
>> Some laptops can only physically use 3gb of RAM. In this case, the PAE
>> kernel would not be an advantage for you. If you install 4gb of RAM,
>> then you will need the PAE kernel to use all 4gb. Again, this depends
>> on the chipset. The core-duo can only use 3gb, but the core2-duo can
>> use 4gb.
>>
>
> In my case, where my laptop only has 3GB of memory installed, is there a
> disadvantage to using the PAE kernel instead of the non-PAE?
>
> --
> Steven F. LeBrun
>
> Quote: /"The objection to fairy stories is that they tell children there
> are dragons. But children have always known there are dragons. Fairy
> stories tell children that dragons can be killed."/
> -- G.K. Chesterton
>
There is no advantage or disadvantage that I am aware of...