In news: you wrote:
>> I've seen no signs of instability or display errors with my Sapphire
>> HD3850 and a Asus P4C800-E Deluxe Motherboard. These "troubles" must
>> depend on some other factor.
>
> Yes, as I said before they depend on the drivers of which the AGP part
> gets rarely updated at all. Simply because AMD doesn't give much on
> AGP support any more. In lots of cases the only driver that works
> stable is the one that comes with the card and which has been modified
> by the board maker, and as soon as the user updates the driver with
> the generic AMD Catalyst driver hell breaks loose.
I can only offer what I personally have experienced. I did a lot of
reading of reviews before finally purchasing the AGP Sapphire HD3850.
One of the most apparent criticisms of all AGP HD3850 cards regardless
of manufacture was that the supplied drivers on CD were horrible. Nearly
all recommended bypassing the included CD for the ATI Catalyst drivers.
I didn't use the drivers on the CD and instead installed the Catalyst
9.1 drivers directly from ATI/AMD and it worked right out of the box
with my old Intel 875P chipset software that's dated March 25, 2004.
In the case of Sapphire, they don't modify their drivers. The driver
available at the Sapphire site is the same driver that is available at
the ATI/AMD site. That might be a reason to go with the AGP Sapphire
HD3850 over other manufactures.
> That you don't have any problems is fine for you, however it doesn't
> change the fact that the chance of experiencing problems is much
> higher with the AGP versions of Radeon HD 2000/3000 series cards than
> with their PCIe counterparts.
Well, the chance of experiencing problems is much higher if you have a
VIA motherboard.
I can't speak for all situations, but it seems to me that the likelihood
of having problems depends on more factors than only the driver.
--
Tom