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How to unlock overclocking feature?

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Last response: in Off-Topic / General Discussion
June 25, 2010 12:57:40 PM


I'm repairing this computer and i cannot unlock the overclocking features. RAM speeds are running at 133MHz and not @ 400MHz

Can someone help me out please on how to unlock the overclocking features?


MB: Kobian(Mercury) PI845EX-L (link: )
RAM: 1GB DDR1 400MHz
CPU: Pentium 4 Northwood Socket 478mPGA

My attempts so far
1. Flashed Bios using Jumper - No luck
2. Moved JP3 Labeled as FSB Controlto 2-3 marked as ACC. ON and 1-2 marked as normal and flashed bios when JP3 was set to position 1-2 and position 2-3 - No luck
3. Used PC Cmos Cleaner - No luck

Any help please ?

I will provided additional information if needed


More about : unlock overclocking feature

a c 373 K Overclocking
June 25, 2010 1:28:01 PM

* You can use the Accelerator jumper to select the Front-Side Bus frequency of the CPU, and accelerate the speed to 800MHz by overclocking

Do you have the M/B manual so you know the different settings the jumper allows?
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