Hi. The driver decides what speed to run the gfx cards
at. gfx cards can also be overclocked. In fact, EVERY
single chip which has a clock speed can be overclocked
and gfx cards are not an exception. But mostly only 3D
accelerators are overclocked, since in 2D, there is
little oportunity to make things go any faster. In 3D
however, there is ample oportunity, to make the card
faster by speeding up transformations and
calculations, for which a math engine exists on the
card, which runs at a particular clock speed. This
speed, as i said is decided by the driver, and varies
from one chipset to the other. Some decently written
drivers provide an env var. to change the clock speed.
I am only aware of this information for 3dfx cards,
but it wouldn't be too hard to look into the source
and find one, if u're driver offers the feature.
But note, overclocked cards are not supported, and
u're vendor may not even replace the card if it gets
burnt after overclocking.
Nikhil.
ILUG-HYD.
--- Rohit <[EMAIL PROTECTED]> wrote:
> Hey guys,
>
> Lately I have been wondering whether there is a way
> to push the graphic
> cards that we have to some limit? There are various
> parameters, RAM DAC,
> various speeds etc.. I was wondering if there are
> more accurate [and
> whether xf86 server's probing is accurate enough]
> utilities which could
> tell us what values to hard-code into the XF86Config
> file. All the
> values that are reported at the start with a -- are
> probed.. how correct
> is that probing usually? ...
>
> Wondering...
>
> Rohit
>
>
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