[ntp:questions] high jitter on serial gps causes big time offsets

Richard B. Gilbert rgilbert88 at comcast.net
Mon Apr 15 00:48:49 UTC 2013


On 4/13/2013 5:09 PM, David Woolley wrote:
> website.reader3 at gmail.com wrote:
>
>> I can obtain some precision crystals (+/- 2ppm) for about $8 to $10,
> + so why aren't they being added to the mid-level and up motherboards?
>
> $8-10 for the crystal would imply a total motherboard price of $2,000+.
>
> I think the big market for high end motherboards is gamers, and they are
> not interested in accurate real time.  The rest of the PC market
> probably finds the issue too technical.

PC's clocks are often chosen for price rather than micro, or nano second 
timing accuracy.

Personally, I have little need for anything much more than hours and 
minutes!

If you need, or just want micro or nano ticks, I believe you can get
them



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