1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

Nouveau Is Power Hungry On Desktops Too

Nouveau

Published on 15 April 2010 01:06 PM EDT
Written by Michael Larabel in Nouveau
4 Comments

This morning we talked about the real need for Nouveau power management as with a notebook bearing a NVIDIA GPU this open-source NVIDIA driver can easily consume 10~30% more power than using NVIDIA's official binary driver. While power management is more important on the mobile side, a quick test was carried out on a desktop too.

For this Nouveau desktop testing of the power consumption a AMD Sempron box was used running a NVIDIA GeForce 9800GTX. Ubuntu 10.04 LTS was used comparing its Nouveau KMS driver (using the Linux 2.6.32 kernel but with the 2.6.33 DRM back-ported, and no Gallium3D driver in use) to the NVIDIA 195.36.15 binary driver. Ubuntu 10.04 was used for some variation in the test results and the Red Hat Anaconda installer with Fedora 13 Beta would hang with this AMD system when it came to detecting the Serial ATA hard drive.

According to the AC power meter, when the Ubuntu 10.04 desktop was idling using the default Nouveau stack, its power consumption had settled at 133 Watts. With the proprietary NVIDIA driver it was level at 120 Watts.

Nouveau Is Power Hungry On Desktops Too


So with this AMD setup using a NVIDIA GeForce 9800GTX, the Nouveau driver is going through about 11% more power when idling -- granted, this testing isn't as thorough as this morning's power testing due to the Phoronix Test Suite not being able to hook into this AC power meter, but at least we have a better idea now where the Nouveau power consumption stands on the desktop side.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Linux Hardware Reviews
  1. AMD Radeon R9 290: Gallium3D vs. Catalyst Drivers
  2. AMD Radeon R9 290 Open-Source Driver Works, But Has A Ways To Go
  3. Trying The Configurable 45 Watt TDP With AMD's A10-7800 / A6-7400K
  4. Sumo's Omni Gets Reloaded
Latest Linux Articles
  1. Preview: OS X 10.10 Yosemite vs. Ubuntu Linux GPU Performance
  2. Radeon Graphics Yield Mixed Results With Linux 3.17 Kernel
  3. AMD's RadeonSI Driver Sped Up A Lot This Summer
  4. Intel's Latest Linux Graphics Code Competes Against OS X 10.9
Latest Linux News
  1. MenuetOS Updated With SMP Threads & Onscreen Keyboard
  2. Mesa Has A New Release Manager
  3. Enlightenment E19 Lands Its New Wayland Compositor Code
  4. Nouveau Turns Into A Mess In Latest Linux 3.17 + Mesa 10.3-dev Tests
  5. New GCC 5.0 Changes, Command-Line Options That Landed So Far
  6. SteamOS Update 133 Has Better Intel Performance, VA-API
  7. DRM Graphics Changes For Linux 3.18 Might End Up Being Smaller
  8. Ioquake3 Works On Finally Switching Over To SDL2
  9. Linux 3.17-rc2 Release Celebrates 23 Years Of Linux
  10. Leadwerks Launches On Steam For Linux
Latest Forum Discussions
  1. AMD Releases UVD Video Decode Support For R600 GPUs
  2. Users defect to Linux as OpenBSD removes Lynx from base system
  3. Chinese People Try To Patent Wine On ARM
  4. American Citizens running AMOK for food stamps
  5. "The World's Most Highly-Assured OS" Kernel Open-Sourced
  6. What Linux Distribution Should Be Benchmarked The Most?
  7. New generation ultra-thin gaming notebook-MSI GS702PE Stealth all around review
  8. Canonical Joined The Khronos Group To Help Mir/Wayland Drivers