The Quad GT seems to be encoding friendly except for the double pass Xvid compression. To put the Xvid score in perspective, it took the Quad GT over 11 minutes to compress a video file where as it took the other boards less than 9 minutes. I ran the test a couple extra time but the results were similar. It is almost certain that the result is due to problems with the software, possibly made worse by the poor Sata-2 driver performance.