NVIDIA Fermi/Kepler GPUs Are The Best Bet For Ubuntu 14.04 Nouveau
Written by Michael Larabel in Display Drivers on 6 April 2014. Page 3 of 5. 11 Comments

The Nouveau results are extremely skewed right now when running out-of-the-box due to the long-standing re-clocking issues... With the Linux 3.15 kernel there's still no proper re-clocking support by default. The issue has been covered by Phoronix for years so if this is your first time reading about the problem, see our hundreds of other Nouveau articles.

The GeForce GTX 680 and GTX 760/770 are performing close to the same speed due to their clock speeds being close to the same as set by the video BIOS at boot time and the Nouveau DRM driver not adjusting them. The GTX 460, GT 610, and GTX 650 default clock speeds at boot time are extremely low and thus very poor open-source Linux performance.

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