Does a separate IRQ for Video Hardware add speed?

[Guest]

Archived from groups: microsoft.public.windowsxp.hardware (More info?)

I am not sure -- after reading about how XP by default
tries to share IRQs and does not enable a standard HAL
method of assigning them - I think it sounds pretty
hecktic to try doing that.

I don't want to attempt it if it were not able to produce
some REAL noticable speed increase for video (AGP)
performance. I have been told that placing your video on
it's own IRQ creates a dramatic increase in performance.

Has anyone had any experience with this?

I am reasonably confident in working on computers and
software experimenting, but I don't want to waste a bunch
of time on it, if there is not a real gain to be had.

Thanks!

 

[Guest]

Archived from groups: microsoft.public.windowsxp.hardware (More info?)

I have not seen this. What you can do is download Everest Home from
www.lavalys.com and install it. When you open it, go to Device-Device
Resources. This will show everything that your video card is sharing
its IRQ's with. Mine is sharing a couple of USB Ports. It may be true
if you had your video card and your hard drive (which shouldn't ever
happen) or sound card all on the same IRQ, but even then I doubt it.

If it were that important for the video card to have its own IRQ,
Windows would have been designed that way. There are pleny of IRQ's to
be handed out and the extremely important ones are exclusive meaning
they share their IRQ with nothing else.

----
Nathan McNulty


Nathan Pizzo wrote:
> I am not sure -- after reading about how XP by default
> tries to share IRQs and does not enable a standard HAL
> method of assigning them - I think it sounds pretty
> hecktic to try doing that.
>
> I don't want to attempt it if it were not able to produce
> some REAL noticable speed increase for video (AGP)
> performance. I have been told that placing your video on
> it's own IRQ creates a dramatic increase in performance.
>
> Has anyone had any experience with this?
>
> I am reasonably confident in working on computers and
> software experimenting, but I don't want to waste a bunch
> of time on it, if there is not a real gain to be had.
>
> Thanks!

 

[Guest]

Archived from groups: microsoft.public.windowsxp.hardware (More info?)

IF there is a PCI interrupt interference problem you may try correcting
it in the BIOS (if available ) by turning on"Assign IRQ for video
adapter" OR you may have to relocate any card in a slot that shares the
SAME PCI interrupt line as the AGP slot.(please review the manual for
the motherboard for this information)

Nathan Pizzo wrote:

> I am not sure -- after reading about how XP by default
> tries to share IRQs and does not enable a standard HAL
> method of assigning them - I think it sounds pretty
> hecktic to try doing that.
>
> I don't want to attempt it if it were not able to produce
> some REAL noticable speed increase for video (AGP)
> performance. I have been told that placing your video on
> it's own IRQ creates a dramatic increase in performance.
>
> Has anyone had any experience with this?
>
> I am reasonably confident in working on computers and
> software experimenting, but I don't want to waste a bunch
> of time on it, if there is not a real gain to be had.
>
> Thanks!
>