On Thu, Aug 28, 2003 at 06:28:03PM -0700, Alvin Oga wrote: > On Thu, 28 Aug 2003, Pigeon wrote: > > > > > the cpu doesn't make any noise :-) ( sorry couldn't resist ) > > > > It makes LOTS of noise... try listening to an AM radio placed anywhere > > near the PC... it just doesn't make any sound :-) > > :-) dont think we were referring to emi noise .. and yeah, > if your cpu makes noise ony our am radio, i'd doubt the validity > of the fcc/ce stamps on the mb and case and ps ..etc etc... > - you should get any interference w/ radio or tv
There's a considerable body of opinion to the effect that in most cases those stamps aren't worth the ink they're printed with... partly due to technical deficiencies in the regulations and partly to abuses of the self-certification process. In the letters pages of Electronics World, the subject is like C-R antispam devices on this list. I run with the sides off, but the shielding properties of any common-or-garden PC case are more or less nonexistent anyway... indeed, you can buy plenty of cases with muckle great holes in the side. > > Having said that, I have a friend whose 1.2GHz system with 2 hard > > drives all assembled properly by the shop had case temperatures almost > > too hot to touch; since he took the side off and put the hard drives > > most pc shops just slapp it together ... with no due care for noise > and airflow ... or interfernce with radio/tv .. unless its like a > sealed box from dell/hp/compact/ etc that voids manufacturer warranty > when opened Well, yeah... you seem to get results dependent on which particular items are on that shop's standard list of parts. The friend concerned is not one to sell duff gear to... > use a finger and smoke tests near any hot objects... move the air around > > - use saran wrap to see inside the case ( see the smoke/air flow ) > when the cover is off but you can see the air flow as is the cover > was on Oh, *that's* what perspex-sided cases with CCFLs inside are for... :-) -- Pigeon Be kind to pigeons Get my GPG key here: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x21C61F7F
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