w_tom wrote:
Why so many "it might be this" or "it might be that" or
"time is updated from the internet"? Every posts says nothing
useful AND does not answer the OPs question. OP even
clarified the question when some replies were rubbish.

The answer -- technically -- was posted without
speculation. Processor hangs obviously do not affect that
clock operation - it one first learned how something works
before posting. The OP posted this - a technical question
that required technical knowledge before replying:

Why do the battery powered clocks in personal computers tend
to keep worse time than quartz watches, even the $1 ones?


See that word "might" ? That word "might" means the poster
does not know the answer and therefore should not have
posted. Anyone can speculate. But even worse, he posted
without reading the answer that was already posted. He did
not read every previous post before replying. A program
called D4 is equivalent to telling us when that mountain will
fall - not relevant to the OP's question. Most replies were
just as useless as this one. Why? How can so many post when
they never bothered to first learn how a computer's battery
powered clock even works?



Why is speculation useless? Nobody can give one solid answer because the
problem is not identical across all computers, nor is it always caused
by one simple factor. I've learned a fair amount of interesting things
from this thread, I guess you missed all that.