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. Intel Pentium G3258 On Linux
  2. SilverStone Precision PS10
  3. ASRock Z97 Extreme6
  4. Nouveau Re-Clocking Is Way Faster, Shows Much Progress For Open-Source NVIDIA
Latest Linux Articles
  1. KVM Benchmarks On Ubuntu 14.10
  2. X.Org Server 1.16 Officially Released With Terrific Features
  3. Ubuntu With Linux 3.16 Smashes OS X 10.9.4 On The MacBook Air
  4. Preview: Benchmarking CentOS 7.0 & Scientific Linux 7.0
Latest Linux News
  1. Development Continues For Supporting EXT4 On NVDIMMs
  2. Libinput 0.5 Improves Pointer Acceleration, Adds A Configuration API
  3. QEMU 2.1.0-rc3 Has More Bug Fixes
  4. Linux 3.17 To Fix Up ASPM, Bring Other PCI Changes
  5. CPUFreq Ondemand Could Be Faster, Use Less Power With Linux 3.17
  6. Intel Adds BPTC Texture Compression To Their Mesa Driver
  7. The Linux Kernel Bang-Bang Thermal Governor Is Banging
  8. NVIDIA Releases K1-Powered Shield Tablet & Controller
  9. Xen Project Announces Mirage OS 2.0
  10. Canonical Community Team Changes Announced For Ubuntu
Latest Forum Discussions
  1. Updated and Optimized Ubuntu Free Graphics Drivers
  2. Remote gui not accessible in Phoronix Test Suite 5.2
  3. AMD "Hawaii" Open-Source GPU Acceleration Still Not Working Right
  4. Open-Source Radeon Performance Boosted By Linux 3.16
  5. In Road To Qt, Audacious Switches From GTK3 Back To GTK2
  6. Debian + Steam + r600
  7. Next-Gen OpenGL To Be Announced Next Month
  8. Ubuntu With Linux 3.16 Smashes OS X 10.9.4 On The MacBook Air