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

The May 2012 Open-Source Radeon Graphics Showdown

Michael Larabel

Published on 21 May 2012
Written by Michael Larabel
Page 2 of 10 - 50 Comments

When starting with Doom 3 at 1920 x 1080 and low quality settings, the relative results are similar to expectations set by past Phoronix articles:

- The latest Git code tends to usually be faster than the older code found in Ubuntu 12.04 that's months old and with the open-source graphics drivers in a continued game of catch-up compared to the proprietary drivers and Windows counterparts, the latest development code always tends to be faster. However, with Doom 3 for some of the hardware there is not much change in this particular test.

- When tweaking the driver stack with enabling 2D color tiling and PCI-E 2.0 support. The open-source OpenGL performance tends to dramatically go up... PCI Express 2.0 still is not enabled by default even though PCI-E 2.0 graphics cards and motherboards have been around for years and we are now up to PCI Express 3.0... PCI-E 2.0 is not on by default since reportedly for some GPU/motherboard combinations there are some issues. Rather than working to figure out the root cause of the problem and take care of that, the AMD developers just disable the support. This is similar to their approach of disabling HDMI audio now on recent kernels too just because of reported issues for a small minority of users. I hope that sometime they will work to get PCI-E 2.0 enabled by default since it works for the vast majority of users and provides significantly better results. For now enabling it you need to set radeon.pcie_gen2=1 from the kernel command-line / GRUB when booting.

- The proprietary Catalyst driver continues to be several times faster than any open-source Radeon driver configuration on Ubuntu 12.04 for Doom 3 across the multiple generations of ATI/AMD GPUs.

Latest Linux Hardware Reviews
  1. A Walkthrough Of The New 32 System Open-Source Linux Benchmarking Test Farm
  2. Habey MITX-6771: Mini-ITX Board With Quad-Core J1900 Bay Trail
  3. OCZ Vector 150 SSD On Linux
  4. Noctua i4 CPU Cooler: Great For Cooling High-End LGA-2011v3 CPUs
Latest Linux Articles
  1. AMD Kaveri: Open-Source Radeon Gallium3D vs. Catalyst 14.12 Omega Driver
  2. 12-Way AMD Catalyst 14.12 vs. NVIDIA 346 Series Linux GPU Comparison
  3. AMD Catalyst 14.12 Omega Driver Brings Mixed Results For Linux Users
  4. 6-Way Winter 2014 Linux Distribution Comparison
Latest Linux News
  1. LowRISC To Feature Tagged Memory & Minion Cores
  2. Intel Skylake Audio Support For Linux 3.19
  3. After 10+ Years, NetworkManager Reaches v1.0
  4. VDPAU Updated To v0.9
  5. An Open Hardware Random Number Generator Proposed
  6. LLVM 3.6 Will Be Branched Next Month
  7. Opera Browser Puts Out Linux Updates For The Holidays
  8. GNOME Shell 3.15.3 Adds Support For High-Contrast Themes
  9. Linux 3.19: ThinkPad Muting Redone, New Dell Backlight Support, Acer Is Banging
  10. KVM Drops Support For IA64 While Adding Various x86 Improvements
Latest Forum Discussions
  1. Need some hand holding with upgrading xserver
  2. Updated and Optimized Ubuntu Free Graphics Drivers
  3. XLennart: A Game For Systemd Haters With Nothing Better To Do
  4. Debian init discussion in Phoenix Wright format
  5. The New SuperTuxKart Looks Better, But Can Cause GPU/Driver Problems
  6. FPS capped on Linux (AMD fglrx drivers)
  7. Are there an app using HSA ?
  8. Bench specific mount point