* The Kat:
The card DIDN'T know, the drivers that came WITH the display did.
There are no monitor drivers. Period.
The card could HANDLE the new resolution,
but the ATI drivers didn't offer it
The ATI drivers of course CAN handle it. But it does not list wide
screen resolutions when it doesn't detect a widescreen monitor. The
driver usually gets this information told by the monitor over the DDC
channel, and as soon as the monitor tells the ATI driver all resolutions
it supports then they are available in the display properties...
I happen to have a display with 1680x1050 myself (Dell 2005FPW), and I
have connected dozens of newer and older cards which includes Radeon
9700, 9600, 9200, 9000, 8500, 7500, 7300 and 7000. ALL of them worked
fine in 1680x1050 WITHOUT any "monitor driver", because the ATI drivers
DO support widescreen resolution out of the box...
Yes, an .inf file. and the one with the display offered resolutions
the ATI setup didn't, and doesn't.
Again, that's wrong. The Catalyst drivers do know about widescreen
resolutions for ages (if it wouldn't know them then it simply wouldn't
be able to display these resolution, inf file or not). The inf file is
only necessary when the driver can't get the monitor information over
the DDC channel for some reason (i.e. crappy monitor that doesn't
provide correct DDC informations, some hardware problem with video
cable/gfx card, some software problem like incorrectly deinstalled
drivers etc). In this case the ATI drivers relies on the monitor inf
file to decide which resolutions the monitor supports and which to
offer. The inf file does NOT (and can not!) add new resolutions to the
driver.
BTW: this question ("why are no widescreen modes listed in the display
properties") has been asked dozens of times in the past, and also has
been explained often enough, too. It would have have taken just a few
seconds to do a search with groups.google.com for you to find out about
how this really works...
The person who started this thread said he doesn't play 3D games,
and 2D performance isn't going to gain much, if anything, when
putting a new video card into an older system.
Since 2D functions are almost completely done by the GPU for almost 10
years now the amount of performance increase in 2D is not dependend on
how fast the system is...
Benjamin