NVIDIA vs. AMD 2D Performance Benchmarks

[molecule-eye]

Do you run a compositor?
From my experience 2d performance significantly drops for Catalyst + Compositor.

Yeah, KWin. I just noticed that after suspending compositing scrolling is indeed smoother. Not sure if it's still as smooth as Gallium, but these subjective things are hard to judge.

[carewolf]

Qt4 using the raster graphicssystem (default in 4.8) or native (default <4.8)?

The raster system is software rendering, which is expecially faster on nvidia, since the using native and relying on 2D acceleration was hopelessly slow.

[dungeon]

Yeah, KWin. I just noticed that after suspending compositing scrolling is indeed smoother. Not sure if it's still as smooth as Gallium, but these subjective things are hard to judge.

I count four people here on forums which use kwin and have some issues with fglrx, so i think it is best to investigate what is main "slowness" culprit with using kwin - is it composite or not, etc. .