a
video-cpu-usage v1.1.0 (Graphics Benchmarks)
a
System Hardware
vdpau
Processor: AMD Phenom II X4 965 @ 3.40GHz (Total Cores: 4), Motherboard: MSI 770-G45 (MS-7599) v2.0, Chipset: ATI RX780/RX790 + SB700/SB800, Memory: 8002MB, Disk: 320GB Seagate ST3320418AS, Graphics: ATI Cedar PRO [Radeon HD 5450] 256MB, Monitor: SAMSUNG
System Software
vdpau
OS: Ubuntu 10.04, Kernel: 2.6.32-25-generic (x86_64), Desktop: GNOME 2.30.2, Display Server: X.Org Server 1.9.0, Display Driver: ati 6.13.1, OpenGL: 2.1 Mesa 7.7.1, Compiler: GCC 4.4.5, File-System: ext4, Screen Resolution: 1920x1080
Additional Details
vdpau
Test Administrator: mj
Test Date/Time: 2011-02-21 07:01:38
Phoronix Test Suite: v2.8.2
Test Notes:
Firefox was running on this system. AMD CnQ was enabled.
Test Results
1080p H.264 Video Playback
Video Decoding: VDPAU

Compare these results against your Linux PC. Run phoronix-test-suite benchmark anon-5525-8558-32627 and wait for the results (with comparative numbers) to appear. It's as easy as that!
Global ID: anon-5525-8558-32627