Intel pentium 4 processor ram capacity

Hello,
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More about intel pentium processor capacity
  1. Intel say that the maximum P4s support is 4GB but that also varys from motherboards and chipsets.
  2. 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.
  3. 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.
  4. 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?
  5. 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.
  6. 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.
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