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There is no way of course to actually read the core voltage with a calibrated instrument, but I will venture to say that the measuring devices installed in the motherboard are about 20% accurate or less. Most shop digital volt meters are calibrated in the 10% range, and cost $100 to $500 bucks. Lab meters are calibrated to about 5% and cost around $1000 bucks or more. I have read where NASA's instruments are calibrated to 2 or 3% accuracy and cost $4000 to $5000 bucks each.
I have two Mainboards that have the capacity to set the Vcore automatically or manually. If I allow an autodetect and Vcore to be set by the board, it also reads out around 1.80 on one board and 1.82 on the other...both boards are made by the same manufacturer, Iwill. One is a KK266 and the other is a KK266 plus.
Sence these boards allow manual adjustment of Vcore, I tried that, and set them up at 1.75 volts...the readout was the same..either 1.80 or 1.82 depending on which board was in use.
I had to drop the manual settings back to about 1.70 Vcore before it actually read 1.75 in the bios screen.
Conclusion?...the dang elcheapo devices that are installed on these motherboards are nowhere near accurate and should be left out, and just (maybe) go back to jumpers for Vcore settings. Personally, I wouldn't be concerned...watch your temps..if they are inline, the Vcore ain't too high.
We couldn't afford the cost of motheboards if the components were in the 2 to 5% tolerance range.
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Politics is supposed to be the second oldest profession.
I have come to realize that it bears a very close resemblance to the first.
Last edited by Bovon; 01-25-2003 at 03:53 PM.
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