Nouveau Reclocking: Buggy, But Can Boost Performance
Phoronix: Nouveau Reclocking: Buggy, But Can Boost Performance
Over the weekend I shared that the Nouveau driver project, which seeks to provide an open-source NVIDIA graphics driver for Linux and other platforms via reverse-engineering, hit a major milestone. The Nouveau driver now supports re-clocking for several generations of NVIDIA GeForce hardware, which allows the open-source driver to put the graphics cards at their properly designed operating frequencies for maximum performance. This can result in the Nouveau driver performing much better against the official closed-source NVIDIA graphics driver, but the support is still very experimental. Initial testing over the weekend found this support to perform well when it works, but that overall it is still very buggy.
Even as an ATI card owner, I'm really excited about this.
Bugs aside (they'll be worked out in a month or so) we are within a factor of 2 of the NVIDIA blob running doom3 (ie shader based, more or less modern, gpu taxing game).
When the first Doom3 benchmarks came out, the difference was a factor of 10.
That's a massive improvement. Congratulations Nouveau/mesa teams.
It can't just boost performance, it can also save power for certain GPU's. My laptop boots at power level 1, but I can now set Nouveau to level 0 to save power.
Which GPU is in your laptop?
Originally Posted by AlbertP
It's a 8400M GS aka NV86.
Why does radeon suck so much compared to nouveau? Considering the open specs it should be much faster...
It seems that, by the end of this year, Nouveau can catch-up with binary blob performance-wise, making binary blob obsolete in the same second (except for newest chip). Maby that could be a moment for NVIDIA, to get their heads out of their asses and start investing in Nouveau.
Honestly I don't think it will catch up that fast, as there's still loads of OpenGL3/4 work to do. But yes reaching over 60% of the blob's speed is already possible with some games when manually setting the highest performance level. And also the support for SLI, TV-out, video decode, HDMI audio, OpenCL, etc. is still missing or not as good as the blob.
Catching up won't be easy if possible ever, because NVIDIA binary driver has a lot of "optimizations", aka cheats (I don't blame NVIDIA here, ATI does the same).
Originally Posted by mirza
Can someone explain to me why its usually the lowend cards that have the best relative performance with mesa? This is not only nouveau, but even lowend radeons have usually much higher relative performance then their highend counterparts.