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Thread: CPU/FSB Wrong Speed?

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    CPU/FSB Wrong Speed?

    Hello, My CPU has been running at 2.53ghz 533mhz for around 2 years with no Problems atall. The 1GB of Memory has been in for around a year and it has definately been working fine with it in. I believe that the CPU has gone down to 1.9ghz since I tried upgrading the motherboard on the Dell PC. After I had bought it I realised that the Motherboard would not fit because of the wrong connnectors (Dell use special connectors which do not appear on standard boards) So because of this I had to reinstall my old motherboard, on boot up it said that I had a 1.9ghz CPU, I put this down to a mistake that would correct itself but after 4 weeks I noticed that it hadn't changed back and so am worried about what to do. This is what CPUZ shows:





    I know that this is the wrong FSB speed, I have tried changing it in BIOS but the CPU speed things are shown as grey and so I cannot get onto them. It is a Dell Machine and Im really confused. My RAM is 1GB of PC2100 (my motherboard only supports PC2100) I think that is all you need to know, oh yeah my motherboard is an Intel one:

    D845EPT2


    Thought I would post some pictures of the BIOS screeens:






    Please can you help me out on how to change the speed back, thanks in advance, Alex

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    Looks like the multiplier is wrong, not the fsb. Is this a P4A or P4B chip?

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    Hi, I am pretty certain that it is the FSB which is wrong as it should be 533 but instead it is 400, this is the same thing when you work it out with 2.53 and 1.9ghz. I just want my CPU back!!! Dell have said that the CPU is faulty but I am not sure and dont want to part with my cash so quickly.

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    Hello, I completely reset the BIOS by redoing the CMOS, I completely took the PC apart and reseated the processor. The Processor is still at 1.9ghz. I have been told by Dell that the CPU is broken and it is not the motherboard, I am not convinced with them as they tried to convince me that my CPU had 512kbs FSB instead of 533mhz, has anyone got any views onto what is at fault? Thanks alot, Alex

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    P4B chips indeed run at 533fsb and has 512kb of cache. Silly sods. Are there any jumpers on the mobo to change the fsb?

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    Hello, no jumpers atall because Dell don't like you doing anything that may overclock it, I hate dell.........

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    Well, the problem is definatly the FSB speed, should be 533 instead of 400 but i think you worked that one out already Sounds like there is something wrong the motherbaord and it is not setting the correct FSB. I dunno if Dell have completly locked down everything or if there is anyway of changing it.
    I don't mean to sound cold, or cruel, or vicious, but I am so that's the way it comes out.

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    So your suggestion would be to get a new motherboard? If I did, I would need a new case
    What would happen if I put my Father's 3ghz 800FSB into this motherboard?

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    It would prob run at either 400 or 533, that mobo prob cant support 800fsb chips.

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    Try and overclock the CPU to its default speeds..

    Then you can have the CPu backc at its normal speed..

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    Isn't there any setting in the bios to manually set the FSB? Could be the FSB setting is set on "Auto" and hence the FSB is greyed out.
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    Quote Originally Posted by Applecrusher
    Try and overclock the CPU to its default speeds..

    Then you can have the CPu backc at its normal speed..
    I was talking him through doing it last night, refuses to work, as soon as he raised the fsb at all it crashed. His PLC chip is blacklisted too which doesn't help

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    why is life so cruel? I have decided to get rid of the damn dell!!! Anyone got a motherboard, case and maybe a CPU they dont want?

    I already have the following

    Sapphire 9800 Pro
    1GB RAM
    Audigy 2
    2 x 80GB Diamond Max9
    DVD+RW
    2.53ghz CPU (I dont know if it is working + the metal cooling thing only fits on Dell motherboards.


    So I dont need those parts

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    Quote Originally Posted by alexander
    why is life so cruel? I have decided to get rid of the damn dell!!! Anyone got a motherboard, case and maybe a CPU they dont want?

    I already have the following

    Sapphire 9800 Pro
    1GB RAM
    Audigy 2
    2 x 80GB Diamond Max9
    DVD+RW
    2.53ghz CPU (I dont know if it is working + the metal cooling thing only fits on Dell motherboards.


    So I dont need those parts
    The chip will fit in any 478 mobo, just remove the heatsink and stick on a new one

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    Quote Originally Posted by Shogun
    The chip will fit in any 478 mobo, just remove the heatsink and stick on a new one

    Im thinking that the chip may be dodgy, not certain but just a thought, better safe than sorry...

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    Quote Originally Posted by alexander
    Im thinking that the chip may be dodgy, not certain but just a thought, better safe than sorry...
    If anything it would be the mobo than the chip, if you get a new rig and want me to test the chip for you give me a buzz.

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