View Feed
group-icon
Coffee Room
Discuss anything here - everything that you wish to discuss with fellow engineers.
12831 Members
Join this group to post and comment.
prakash.athani
prakash.athani • Nov 22, 2008

Maximum RAM supported by P4?

Hey people, Cheers!!!!!!

I want to know what is the maximum supported RAM for Pentium 4?
Also I want to know whether max RAM depends solely on processor or motherboad?
Thanks
Prasad Ajinkya
Prasad Ajinkya • Nov 22, 2008
Prakash can you believe it also depends on the OS? Windows does not support more than 4GB of RAM, if you want to use more ... then you have to go for the Enterprise version.
prakash.athani
prakash.athani • Nov 22, 2008
What about Linux destributions?
Prasad Ajinkya
Prasad Ajinkya • Nov 22, 2008
Prakash, I have seen till 8GB on CentOS and FC4. 3GB on Ubuntu 8.04 and 2GB on OpenSuse.
bayazidahmed
bayazidahmed • Nov 22, 2008
kidakaka
Prakash can you believe it also depends on the OS? Windows does not support more than 4GB of RAM, if you want to use more ... then you have to go for the Enterprise version.
Enterprise version? tsk tsk tsk.
In OS it depends if your OS is 32-bit or 64-bit.
32-bit will can address till 4 GB.
and 64-bit can address till 16 TB.

P4 can address upto 4 GB maximum.
Prasad Ajinkya
Prasad Ajinkya • Nov 22, 2008
Bayaz, Check Windows 2003 specs. The Enterprise version supports 8GB - check the support site 😀 - Large memory support is available in Windows Server 2003 and in Windows 2000
bayazidahmed
bayazidahmed • Nov 22, 2008
Every single Edition of Windows XP/2003/Vista/2008 comes in 32-bit or 64-bit versions. And the maximum addressing capability is the same as I mentioned..

except for some 32-bit Windows editions as you mentioned.
I found that some 32-bit editions support upto 64 GB by using the extra number of address lines (4 to be precise) provided by the Intel Pentium Pro and above processors, called as PAE (Physical Address Extension).
On Windows this mechanism is called AWE (Address Windowing Extensions).

References:
1. Microsoft
2. Wikipedia

Share this content on your social channels -