On Oct 27, 9:15 am, kony <s...@spam.com> wrote:
> On Fri, 26 Oct 2007 23:52:56 -0000, snd...@gmail.com wrote:
> >I bought GigaByte GeForce 8600GT Video Card GVNX86T256H recently
> >due to its silentpipe tech.
> >Well, there is no definitely no fan noise since there is no fan.
> >But gigabyte seems to have used the cheapest condensers they could
> >get ahold of and they whine(hum) when the card is doing any 3D
> >(Civ IV, Sid Meyer's railroads, you name it).
>
> >is there a 2600XT or 8600GTS that uses condensers that don't suck
> >like the ones on the girabyte card?
>
> IIRC, condensers translates into capacitors in modern
> engrish.
>
> Capacitors don't whine(hum), unless severely failed which
> couldn't be the case with the card still working. Instead
> it would be the inductors whininig if anything, OR the power
> supply making a noise at this changed power output level.
>
> Either way, it is not a matter of condensers that "don't
> suck". If your card truely has inductors that whine,
> instead of the PSU making the noise (which is more common),
> your options are RMA/replacement or coating the inductor
> coils with something ( remove them and dunk in laquer or
> leave them on and put a liberal coating of epoxy on them to
> still the coil resonant vibrations).

there are some black shiny boxes next to the capacitors.
are those the inductors? if so they are already epoxied and
i see little benefit from another coating.
i see no parts with the coils exposed on the parts
of the parts of the card that are not covered with the heatsink.

> Otherwise, replacing the card to reduce this kind of noise
> is a crapshoot/lottery, any slightly different card will
> have a different inductor resonant frequency depending on
> the load, power, PSU output and ripple. It's not like there
> is one solid variable to recommend a specific card which is
> why I mentioned the factors involved. You could randomly
> choose a different card and resolve this "problem", but many
> are reference design cards in same GPU family so if that

??? i have no access to the engineering samples.
as i said i'm using a production card. what do the components
apart from the silicon on the reference cards have to do with the
production card from gigabyte i'm using???

> doesn't help it would be time to consider either replacing
> the PSU or coating inductors with epoxy/etc as mentioned.
>
I'm not a complete idiot. I have the system on the table
as opposed to the case and i can pinpoint the source of the
noise. The PSU is the low noise Zalman and there is not a peep
coming from it except for the low constant drone fan
that obviously is not dependent on the current gpu setting.
As i have already said the noise is coming
from the graphics card when it switches to 3D mode.

> Key is to first be certain of where the noise comes from.
> Perhaps you have already, but adding a video card and then
> noticing inductor whining noise does not automatically
> implicate the video card as the source of that noise.

it is. i checked before i posted in case this was not
clear from my original post.