The Power Consumption & Efficiency Of Open-Source Linux GPU Drivers
Written by Michael Larabel in Display Drivers on 26 July 2014 at 02:00 PM EDT. Page 3 of 4. 14 Comments.
Again, the raw Xonotic results for the hardware.
The AMD Northern Islands hardware was consuming the most power...
On a performance-per-Watt basis, Nouveau was actually leading over the Radeon graphics cards with their open driver.