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Gigabyte P35 board fails EMI tests
Posted: Tue Sep 25, 2007 9:36 am
by Apoptosis
The Inq has a story that a recent sample Gigabyte's GA-P35-DS3 mainboard, based on the Intel's P35 chipset, has failed Electro Magnetic Interference (EMI) compliance testing...
Basically, according to the ETC tests, the mainboard slightly exceeds the allowed limit in the horizontal polarity (see screenshot) and vertical polarity CE EMI tests. Of course, the problem could have been with the particular sample, and may not mean anything truly serious. Or, it could mean that whole batches pump out too much radiation. Gigabyte's competitors shouldn't open the Champagne too quickly on this, however, as it could happen to them too.
Source
Re: Gigabyte P35 board fails EMI tests
Posted: Thu Sep 27, 2007 6:12 pm
by IRQ Conflict
It has been shown that this test was paid for bey a "competitor". Sketchy at best I'd say. Test some more samples.
Re: Gigabyte P35 board fails EMI tests
Posted: Thu Sep 27, 2007 10:07 pm
by Bio-Hazard
I'd be willing to bet that if all the makers had all their different models tested, there would be a ton more boards on the fail list.............
Re: Gigabyte P35 board fails EMI tests
Posted: Sun Oct 07, 2007 10:46 am
by Kougar
I was a bit disturbed to read that article as I am a Gigabyte user, but the EMI levels were not anything drastic at least.
Bio-Hazard wrote:I'd be willing to bet that if all the makers had all their different models tested, there would be a ton more boards on the fail list.............
Unfortunately I think you are very correct...
Another advantage to having a thick steel case, I guess...
Re: Gigabyte P35 board fails EMI tests
Posted: Sun Oct 07, 2007 3:08 pm
by werty316
Too bad since the P35 boards from Gigabyte are quite sweet.
Re: Gigabyte P35 board fails EMI tests
Posted: Mon Oct 08, 2007 9:41 pm
by Bio-Hazard
I really don't think the test results were all that bad, at least not bad enough for me to not recomend using the boards. They got some great features and perform really great IMHO.
Re: Gigabyte P35 board fails EMI tests
Posted: Mon Oct 08, 2007 10:34 pm
by Nein
IRQ Conflict wrote:It has been shown that this test was paid for bey a "competitor". Sketchy at best I'd say. Test some more samples.
I wondered if the EMI test experts got enough brain to verify default BIOS "Spread-Spectrum = Enable" for the test.
The test numbers reported co-incidently real closed to typical default BIOS "Spread-Spectrum = Disable" numbers.
Re: Gigabyte P35 board fails EMI tests
Posted: Tue Oct 09, 2007 7:07 am
by IRQ Conflict
Wouldn't surprise me in the least.
Re: Gigabyte P35 board fails EMI tests
Posted: Tue Oct 09, 2007 2:18 pm
by Nein
It's a pity, the plotgraph presented as evident wasn't even an actual plotgraph... Because other than the spikes everything else had zero energy level readings.
The plotgraph looked like it was made up by first class EMI illiterate graph plotters.