Sign in with
Sign up | Sign in
Your question

Intel pentium 4 processor ram capacity

Last response: in CPUs
Share
July 23, 2012 4:07:02 PM
a c 104 à CPUs
July 23, 2012 4:10:03 PM

Intel say that the maximum P4s support is 4GB but that also varys from motherboards and chipsets.
a c 101 à CPUs
July 23, 2012 4:19:03 PM

The 32bits P4s cannot support more than 4GB RAM and some of the addressing space is eaten up by memory-mapped IO which may leave you with 3-3.75GB usable.

So the most memory worth installing on 32bits CPUs is 3GB unless you do not mind some of the 4th GB going to waste.
Related resources
a c 188 à CPUs
July 23, 2012 4:52:20 PM

Since most of the Intel® Pentium® 4 processors support dual channel memory you going to want to put the memory in groups of 2. So you can go with 2 x 1GB and 2 x 512MB to reach 3 or 4 x 1GB to for 4GB of which you will only see a little over 3GB. This 32bit only support was one of the drawbacks to the Intel® Pentium® 4 processors is that we didnt roll out 64 bit support until the Intel® Core™ 2 Duo's processors.
a c 104 à CPUs
July 23, 2012 5:15:32 PM

IntelEnthusiast said:
Since most of the Intel® Pentium® 4 processors support dual channel memory you going to want to put the memory in groups of 2. So you can go with 2 x 1GB and 2 x 512MB to reach 3 or 4 x 1GB to for 4GB of which you will only see a little over 3GB. This 32bit only support was one of the drawbacks to the Intel® Pentium® 4 processors is that we didnt roll out 64 bit support until the Intel® Core™ 2 Duo's processors.


Are you actually from intel?

a c 101 à CPUs
July 23, 2012 5:32:38 PM

IntelEnthusiast said:
This 32bit only support was one of the drawbacks to the Intel® Pentium® 4 processors is that we didnt roll out 64 bit support until the Intel® Core™ 2 Duo's processors.

A few Prescott models in the 5xx series also had x64 support.
a c 218 à CPUs
July 23, 2012 6:09:40 PM

Yep, 64 bit support from Intel started with the Pentium 4 6xx series and was added to the later model 5xx series as well. I had a Pentium 4 530 and a buddy had the 630. The only difference was the 630 had 64 bit support.
!