BIOS Features

The BIOS included in the AOpen EY855-II system isn’t advanced and overclocking friendly, but it has enough to get the job done.

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The Advanced Chipset options menu allows setting the DRAM timings and frequencies as well as enabling or disabling the on-board video controller in the i855 chipset. 

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The core frequency setting allows you to change the standard FSB and memory speeds while also allowing you to set the internal clocks of the i855 graphics core.  The first number is the FSB and the second one is the memory speed, and these are the ones that we’ll focus on.

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This screen shows the hardware monitoring options AOpen included.

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The frequency and voltage menu allows us to change, you guessed it, various frequencies and voltages.  Here we see the CPU bus frequency able to be set from 100 to 400 MHz, though I doubt any current Pentium Ms would make it past 150 MHz or so.

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The multiplier can be set from 6x up to the maximum value for the processor, which is 20x for a 100×20 = 2.0 GHz processor. 

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The AGP bus is locked, which helps in overclocking, but you can adjust to these other speeds as well should you wish to give it a whirl. 

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The same goes for the PCI bus…

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Finally, the voltage settings on the AOpen board follow the same pattern as the DFI motherboard and the multiplier setting above: you can only work your way down.  The top voltage here is 1.308v.

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