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CPU multiplier locked, running half it's frequency

Forum CPU & Components : CPUs - CPU multiplier locked, running half it's frequency

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yank918   07-16-2009 at 02:31:45 AM

So I ordered a 2.8ghz northwood p4 (533/512) for my P4S533 motherboard off ebay. My motherboard is flashed and capable of supporting this CPU, but the multiplier in my bios is locked (motherboard is set to jumperfree/manual settings) to 12x instead of 21x, so it runs like a 1.6ghz instead of the 2.8ghz it is. Why is this CPU locked and is it possible to unlock? Thanks in advance!

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Message edited by yank918 on 07-16-2009 at 02:34:19 AM
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GhislainG   07-16-2009 at 03:35:15 AM
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What's the S-Spec of your CPU?

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GhislainG   07-16-2009 at 04:41:56 AM
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That's an Intel Mobile Pentium 4. Are you sure your BIOS supports that CPU? Did you read this note? "Processor frequency is reduced to 1.6 GHz in battery-optimized mode (1.2V)". http://www.cpu-world.com/CPUs/Pent [...] 72512.html

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yank918   07-16-2009 at 05:18:01 AM
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Ha! I had no idea. Do I just need to increase the voltage, or get a refund?

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GhislainG   07-16-2009 at 05:27:06 AM
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The VCore specs are 1.475 - 1.525V. You lose nothing increasing the voltage. Didn't the place you ordered that CPU from specify that it's a Pentium M?

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yank918   07-16-2009 at 05:31:47 AM
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haha. I overlooked it. we'll see if this does the trick.

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yank918   07-16-2009 at 05:47:02 AM
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Well, I increased it to 1.4v (as high as my motherboard goes), and it didn't do anything. Do you have any other ideas?

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yank918   07-16-2009 at 05:48:56 AM
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when i look at hardware monitor it says my vcore voltage is 1.24. Is that significant and how do I raise it? it's set to 1.4 already

Reply to yank918
AKM880   07-16-2009 at 07:43:59 AM
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Some motherboards may not be able to use a mobile CPU. I thought that laptop's have different socket's anyways?

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chunkymonster   07-16-2009 at 08:04:04 PM
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yank918 wrote :

So I ordered a 2.8ghz northwood p4 (533/512) for my P4S533 motherboard off ebay. My motherboard is flashed and capable of supporting this CPU, but the multiplier in my bios is locked (motherboard is set to jumperfree/manual settings) to 12x instead of 21x, so it runs like a 1.6ghz instead of the 2.8ghz it is. Why is this CPU locked and is it possible to unlock? Thanks in advance!

If ther options are not available in the BIOS then there is little you can do. My advice is scrap that thing and buy a non-mobile P4.

Reply to chunkymonster
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