Biostar I945P-A7 (Intel 945P)
Overclocking and stability
Prior to moving to overclocking, let's look into the power converter. It uses a 3-phase power scheme, in which there are four 3300 mkF and three 1500 mkF capacitors.
Now on to the overclocking features.
First off, Biostar I945P-A7 allows adjusting the system bus speed within 200 to 232 MHz in 1 MHz increments.
Of convenience is that you can enter the desired FSB value from the keyboard.
Secondly, Biostar I945P-A7 allows raising voltage on the processor (Vcore) by 5 and 15 percent.
Then, the advanced user can raise Vmem from 1.8V (nominal) up to 2.1V (in 0.1V increments).
Besides, there is a feature for adjusting the processor multiplier:
However, it proved unusable (perhaps, a BIOS flaw). In particular, with Pentium4 660 the system started up with the multiplier = 14, which prevented us from running comparative performance tests versus other boards built on i955Xi945P.
Now let's try the overclocking features in practice. Therefore, Biostar I945P-A7 flatly refused to overclock Pentium4 540.
Bundled to the board, there is the Biostar WarpSpeeder utility for programmatical overclocking, having an amusing GUI:
But in view of the poor overclocking capability, its practical use is minimum.
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