test-1
video-cpu-usage v1.1.0 (Graphics Benchmarks)
This is a test profile that will record the CPU usage while a 1080p H.264 video sample of Big Buck Bunny is played back for several minutes using MPlayer.
System Hardware
2011-05-26 14:50
Processor: AMD V160 @ 2.40GHz (Total Cores: 1), Motherboard: Hewlett-Packard 143F v67.33, Chipset: AMD RS880, Memory: 3694MB, Disk: 500GB Hitachi HTS54505, Graphics: ATI M880G [Mobility Radeon HD 4200] (500/533MHz), Audio: IDT 92HD81B1X5
System Software
2011-05-26 14:50
OS: Slackware 13.37.0, Kernel: 2.6.37.6 (x86_64), Desktop: KDE 4.5.5, Display Server: X.Org Server 1.9.5, Display Driver: radeon 6.14.1, OpenGL: 2.1 Mesa 7.9.2, Compiler: GCC 4.5.2, File-System: ext4, Screen Resolution: 1366x768
Additional Details
2011-05-26 14:50
Test Administrator: makoto
Test Date/Time: 2011-05-26 14:50:31
Phoronix Test Suite: v2.8.2
Test Notes:
AMD CnQ was enabled.
Test Results
1080p H.264 Video Playback
Video Decoding: X-Video

Compare these results against your Linux PC. Run phoronix-test-suite benchmark anon-30803-18598-6719 and wait for the results (with comparative numbers) to appear. It's as easy as that!
Global ID: anon-30803-18598-6719