Re: [linrad] Buying the Linux PC for Linrad use.

[Colburn <kd4e@xxxxxxxxxxxx]

I tend to be shy about on-board video because of past failures, so I
tend to look for a mobo that provides for a replaceable video card and
would like to have firewire, and DDR 333 -- are you aware of an equally
rf-quiet mobo that has these features, please?

Or must one settle for a little older technology in order to find more
stability and less noise?

Thanks! & 73, doc kd4e

On Thu, 2003-07-03 at 14:47, David Garnier wrote: 
> We ended up selecting an Intel P4 CPU and Intel P4 mother
> board for a couple of reasons.  1) The P4 processor has a better
> overtemp solution (if the heatsink pops off) than comparable
> AMD cpu's do.  Our product can be rolled around anywhere
> in or outside a hospital. It has to be reliable and survive bumps
> and elevator thresholds and the like. Boxed Processors come
> with a fan and as a package are garanteed for 3 years, (think
> about this.) 2) Intel claims their motherboards are tested to
> comply with FCC Home & Office use Class B radiated
> emissions specs.  3)  FCC Home & Offices specifies that
> radiated emissions testing to be done WITH the PC cabinet's
> cover OFF.  I did such "cover off testing" to our 845GBV Intel
> board & 2 Ghz P4 processor, from 30 Mhz to 6.5 Ghz their
> were under the Group 1 Class B limit!  4) I did comparaible
> radiated emission testing to a P4 based MSI motherboard and
> they did not fare as well as the 845GBV. 5) Intel assembly
> notes (for PC assemblers) states "to meet radiated emission
> compliance must use their supplied I/O shield cutout to pass.
> 6) My take away (for this testing) is that Intel manufactured
> motherboards are a excellent choice for being radiated emission
> quiet.  7) Since my testing I have upgraded 3 of my home PC's
> to Intel motherboards, that's what I use.





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