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

Voltage Tweaking Comes To R600+ GPUs On Linux

AMD

Published on 27 May 2010 06:50 PM EDT
Written by Michael Larabel in AMD
17 Comments

Earlier this month we reported on vastly improved ATI power management support within the open-source Radeon graphics driver stack for Linux that now supports dynamic power management along with different power management profiles. Following that we provided a detailed look at the ATI Linux power management support with plenty of charts showing how the power management is working out with this latest open-source code.

While the latest power management patches are great for adjusting the GPU frequencies to conserve energy, now those with Radeon R600/700 hardware (ATI Radeon HD 2000/3000/4000 GPUs) can benefit from voltage adjustment support too. R100-R500 ASICs already have voltage adjustment pretty much implemented within the open-source code, but AMD's Alex Deucher has today provided support for the newer ATI Radeon generations.

The power management voltage support comes by means of four patches:

- patch default power state with default clocks/voltages on r6xx+
- radeon_set_power_state fixes
- voltage fixes
- add support for SetVoltage cmd table

Right now these are just patches sitting on the DRI mailing list. These patches potentially could still end up in the Linux 2.6.35 kernel otherwise they will make it in the Linux 2.6.36 kernel a few months later.

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. Btrfs On 4 x Intel SSDs In RAID 0/1/5/6/10
  2. AMD Radeon R9 290 On Ubuntu 14.10: RadeonSI Gallium3D vs. Catalyst
  3. MSI X99S SLI PLUS On Linux
  4. NVIDIA GeForce GTX 970 Offers Great Linux Performance
Latest Linux Articles
  1. Windows 8.1 vs. Ubuntu 14.10 With Intel HD Graphics
  2. 6-Way Ubuntu 14.10 Radeon Gallium3D vs. Catalyst Driver Comparison
  3. NVIDIA vs. Nouveau Drivers On Ubuntu 14.10
  4. Ubuntu 14.10 Offers AMD Radeon Driver Performance Improvements
Latest Linux News
  1. SIMD For JavaScript Continues Coming Along
  2. GNOME 3.15.1 Released
  3. Red Hat Software Collections 1.2 Adds GCC 4.9, Nginx 1.6
  4. GLAMOR Acceleration Continues To Be Cleaned Up
  5. Russia's Yandex Web Browser Finally Released For Linux
  6. Linux Kernel Finally Being Optimized For SSHDs
  7. GPU Profiling Support Lands In Mozilla Firefox
  8. Kubuntu 15.04 Will Use KDE's Plasma 5 By Default
  9. KDBUS Submitted For Review To The Mainline Linux Kernel
  10. An Intel-Based Ubuntu Touch Tablet Is Planning To Launch Soon
Latest Forum Discussions
  1. Is foolish currently develop in machine code, hexadecimal and assembly?
  2. How to get rid of Linux
  3. Reducing The CPU Usage In Mesa To Improve Performance
  4. Help diagnosing problems with a Readon HD 4670 on Mesa 10.3.2-1
  5. Advertisements On Phoronix
  6. nv and xorg.conf under Debian PPC
  7. Looking for a Open-Source AMD experienced Linux mentor
  8. Bad perfomance in gaming