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Clock speed of faster processor same as old?


Salamander7

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I have just replaced a Pentium 4 2.80ghz CPU with a 3.80 GHZ CPU. In System info the machine reports the new processor as Pentium 4 3.80 GHZ but the clock speed is reported as 2.89. Why??

System is a Fujitsu Siemens Scaleo P tower with a Fujitsu Siemens D 2190a mother board with Intel 915GL chipset. The BIOS is Phoenix. Win XP Home Edition.

Would a BIOS update help? I have not touched the BIOS at all so should I have entered it and changed a setting for the new CPU.

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Chronos the 2nd

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If you are using such an old processor that will mean that you are using an equally old motherboard and unfortunately unlike today's motherboards I would not attempt to update the BIOS unless you are extremely confident. Get it wrong and you will have a rather large place mat.

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Salamander7

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Chronos,

I am aware of this issue. Is the reason the processor is not running at its optimum speed because of the BIOS? Or is there any other cause. I could pay for a BIOS flash but would this make a difference?

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Fruit Bat /\0/\

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perhaps you need to set the Bas clock and multiplier in BIOS

Base clock x CPU multiplier = CPU MHz Speed

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Salamander7

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Fruitbat,

Please could you illustrate your point with a simple example? I could certainly enter the BIOS and look for "base clock" but would there be a number of options for me to choose from or the invitation to get involved in some scarey calculations?

It is Phoenix BIOS and the new CPU is 3.80GHZ

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Fruit Bat /\0/\

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HAve a read here

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woodchip

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If you can get the manual for the motherboard it should tell you what to change to get full speed from new cpu. it may be BIOS setting, or may be a Jumper on the board

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Salamander7

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Well I checked out my Phoenix BIOS and it wont give access to the relevant section. The BIOS believes the CPU has a clock speed of 2.80 and thee is no scope for change. I suspect a BIOS update is the only way forward.

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