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2.2 P4 replaced 3.2 P4 works at half

I have a Dell Dimension 2400 and I tried upgrading from my 2.2 P4 to a 3.2 P4.

2.2: http://ark.intel.com/Product.aspx?id=27434
3.2: http://ark.intel.com/Product.aspx?id=27501
my motherboard is an Intel 845GV chipset

My problem is that with the 3.2 P4 it is only operating at 1.6ghz instead of 3.2... any ideas to fix it anyone?


Windows XP
Dell Dimension 2400
Intel 3.2GHZ P4
2 x 512mb RAM (1GB - not dual channel)
Nvidia GeForce 5200fx
7 answers Last reply Best Answer
More about replaced works half
  1. off the top of my head without researching it
    I would think that your chipset and mobo only support a 400mhz FSB
    while that 3.2 is probably a 800mhz FSB chip
    so that would explain the CPU ghz being cut in half
    Just a thought
  2. Best answer
    king smp is correct. According to the specs: "Intel® Pentium® 4 that runs at 2.2 or 2.4 GHz internally and 400 MHz externally, or 2.266, 2.4, 2.53, 2.66, 2.8, or 3.06 GHz internally and 533 MHz externally." The fastest CPU that you can buy is a 3.06 GHz.
  3. ah, that's terrible news, i hate shipping and returning things.

    but which one would be a better choice to get now:

    2.8ghz 90nm prescott: http://ark.intel.com/Product.aspx?spec=SL8JX
    3.06ghz 130nm with hyper-thread northwood: http://ark.intel.com/Product.aspx?id=27499

    thanks for fast responses :D
  4. none....way too outdated
  5. Seriously DO NOT pay more than $20 USD with the shipping for that 3.06
    I bought two Xeon 3.2 P4 based cpus for $20 with the shipping included on US Ebay
    If you have a Microcenter near you they have loose P4 for like $10
    also look on Craigslist if available

    Changing the CPU would be a good learning experience
    and a high end P4 is fine for browsing,cd ripping,office work (MS Word etc)
    My wife still uses a P4 2.8 HT for browsing, Bjeweled type games and coupon printing
    so it is viable as a light duty computer
    but definitley not worth investing serious money in
  6. Best answer selected by evan1715.
  7. Btw, I would get a northwood P4 over a Prescott any day. Northwood is comparable in speed to Prescott while using less power, because they made an architectural change that seriously killed Prescott's ability to process efficiently. So even though it was on a 90nm lithography compared to Northwood's 130nm, it was worse speed for the power consumption.

    Don't bother spending too much money on one though. They are nothing compared to a low end dual core from AMD or Intel today.
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