On Wed, Nov 11, 2009 at 03:45:13PM +0100, Xavier wrote: > On Wed, Nov 11, 2009 at 3:01 PM, David C. Rankin > <drankinatty@xxxxxxxxxxxxxxxxxx> wrote: > > > > Just be thankful you are not using ATI hardware where everything prior to the > > 2400 Series cards were deprecated to "Legacy" cards and all Linux support > > dropped in March ;-) > > > > (performance difference between fglrx and ati 1066 FPS version 160 FPS, and > > the downclocking isn't present in the opensource driver (not the gpu > > powerdown) and temps are up 25 degrees (you feel it in the laptop palm rest). > > > > Heh. > > ati 3d support is much more advanced and mature than nouveau one. > > And I thought ati had some sort of downclocking support. But I am not > 100% sure. From your comment, maybe it can just downclock the mem > speed and not the gpu speed ? > In any cases, for nouveau it is inexistent. The opensource ATI drivers are definitely in a very good shape especially at this stage of development. I decided to ditch catalyst* completely the other day until I had to get out and actually use the battery. The battery life dropped 40-50%. I wasn't even aware GPU consumes that much power . So, yes the opensource ATI drivers are great but not for laptop usage. *my card (Mobility Radeon HD 4570 is M92 based which is still supported).
