I recently switched from the generic 32bit kernel to the pae kernel thus enabling 10GiB instead of 3. After switching I noticed a different GUI behavior: When moving windows, I get ~3 redraws per second. With the non-pae kernel I use the proprietary amd/ati driver giving a nice 2D performance. Since I use this machine also as desktop, full 2D support is required. 3D would be nice. If possible, I'd use the proprietary driver.
Moving to 64bit is not an Option (I use a multiboot system and already have a working 64bit OS).
How to achieve full 2D acceleration with pae?