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1.6 Ghz reported running at 598 Mhz

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December 29, 2009 11:32:51 PM

Hello All, I'm running a Toshiba Tecra M1, Pentium M at 1600Mhz, 1Gb DDR, and recently upgraded to Windows 7. System fan works and everything is clean, ram is PC2100 but reports to be running at 133Mhz. any ideas??? Thanks!
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December 30, 2009 12:15:07 AM

Hmm, go into your BIOS and check your clock multiplier for the CPU. Set your clock multiplier to a setting where the FSB * Multiplier = about 1600.
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December 30, 2009 3:29:46 AM

If I'm not mistaken, laptops frequently under clock to save power and control heat issues. If this is the case, it may kick up when you do something that requires some CPU power.
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December 30, 2009 11:05:19 AM

^+1
:) 
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December 30, 2009 7:11:50 PM

^+2. The Pentium M, IIRC had something similar to SpeedStep.
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December 30, 2009 10:48:19 PM

Thanks for the replies. Can't change any sort of multiplier or voltage from BIOS, and all settings are set for maximum performance both in BIOS and in Windows. Regaurdless the changes I make, the frequency is never reported over 598 MHz. I'm totally lost.
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December 31, 2009 12:02:46 AM

^ Try setting the BIOS to Default values and see.

Also, download CPUZ and Prime 95. Run the Prime95 Small FFT and see what CPUZ reports for the speed.
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December 31, 2009 12:45:08 AM

I've been using CPUZ and it does show fluctuation in frequency, but it never goes over 598 lol. Also, I updated the BIOS to the latest version hoping for a fix... and nothing. Could this possibly be from overheating??
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December 31, 2009 1:45:03 AM

I ran Prime 95, and it still doesn't go any faster so I know it's not a speed stepping issue. The Bus speed is 99.8 MHz and the multiplier is 6X. If I'm calculating this right, 1600MHz / 6X = 266 Bus speed. Is there a program to overclock the bus speed through Windows?
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