cpu speed incorrect?

  caro456 20:27 11 Feb 2007
Locked

I have just replaced motherboard with an ASRock K7NF2-RAID, and CPU with an Athlon xp 2600+. I set the jumpers on the moherboard to FSB 333MHz, but in the BIOS the CPU is described as a 'mobile AMD Athlon(tm) XP - M' with a speed of 1.00 GHz. This looks a little weird - is it right or do I need to do something about it? I managed to boot into safe mode once before windows threw a complete wobbly, and the general tab of the system properties box shows it as a 'mobile AMD Athlon(TM)XP-M 999MHz, CPU Frequency 166 MHz.'

  woodchip 20:32 11 Feb 2007

If it is a Mobil CPU the power goes up and down as it needs more load. Like a Gear box in a car

  Totally-braindead 20:44 11 Feb 2007

The jumpers or the motherboard should be set to 266mhz not 333mhz I think though it depends on which 2600 you have click here

  RobCharles1981 20:57 11 Feb 2007

Thats the same mobo I have on my spare comp using right now, the jumpers have to be set to 266mhz on the board.

  caro456 20:58 11 Feb 2007

I will try changing the jumpers over and see if that makes a difference then. thought I had the 333mhz version, but there's nothing on the receipt to clarify, and it was oem so no helpful packaging either.
Woodchip - thanks for the explanation, I've not seen mobile on cpu description before - it's a good thing then, right?

  woodchip 21:06 11 Feb 2007

It should run cooler and quieter if it's not running games etc

i didnt think amd xp had 'power now'?

  ed-0 21:22 11 Feb 2007

This motherboard can take either the 333Mhz barton core XP chip running at 1.917Ghz or the 266Mhz 2.133Ghz Xp chip. Your first post points out that you have the barton 333mhz cpu.

As per woodchip, you are running a "M" chip that shuts down the multiplier of the chip, so it's just ticking over. Start to use some intensive programs and the multiplier jumps to full power.

You should have a setting in the bios to override this if you wish to.

  woodchip 21:22 11 Feb 2007

It's the CPU that does it, not XP. they put XP on Laptops that Have Mobil CPU's. It's no different

  woodchip 21:24 11 Feb 2007

You can buy both motherboards and mobil CPU's that fit Laptops for building quiet Computer that fit in a case

  caro456 21:30 11 Feb 2007

Well I've changed the jumpers and the cpu is now registering as 800 MHz with a frequency of 133 MHz in the BIOS, surely it should be at least 2000 MHz shouldn't it?

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