On Wed, Apr 27, 2011 at 03:49:40PM -0700, Jesse Barnes wrote: > On Wed, 27 Apr 2011 23:03:14 +0100 > Chris Wilson <ch...@chris-wilson.co.uk> wrote: > > > We should probably just enable fbc on the pipe connected to the > > > internal panel (if any) and keep it disabled otherwise. > > > > On Arrandale, fbc is potentially a bigger win than rc6 - but is also a > > potential loss - right? > > No, I think rc6 is still a much bigger win even on Arrandale (iirc >>1W > for rc6, ~0.5W for fbc best case). And yeah, there is the potential for > increased power consumption when fbc is enabled if a framebuffer that > doesn't compress very well continues to get re-compressed over a long > period of time. > > Jesse
The last tests that I ran it seemed we needed to be really careful about when to turn on FBC on for Arrandale as noted in the bug that Chris assigned to me below :). I did some rc6 tests prior to the FBC tests and can't find my notes, but I actually recall it being closer to 2W. https://bugs.freedesktop.org/show_bug.cgi?id=31742 Ben _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx