I do not personally own a Radeon but in response to
"how much has 2D changed in the last few years and the GF2
poor image quality?". Any graphics manufacturer can claim
whatever maximum clock frequency they want, but can they meet
it with good visual quality. VESA is attempting to standardized
the rating, but until that happens, that rating will be abused
by some of the marketing departments of chip vendors.
1280x1024@85=158 MHz pixel clock (6.36 ns period)
1600x1280@85=230 MHx pixel clock (4.34 ns period)
You can check this for itself by using the
VESA Mode Calculator
So in the case of the user who runs at 1280x1024, the signal
has 6.36-4.34=2ns more time to settle (31% more time).
The problems with
GF2 cards is that they do not support users who chose to
run at 1600x1200 resolution on larger monitors. Hope this
clears up some things. It seems to indicate that their edges
take more than 4.34 ns to settle. The other thing is that their
part are suppose to be rate at 300Mhz...the truth is out there/somewhere.