The HD6850 is kinda old GPU already, and also, most GPU assisted encoder are optimized for speed rather than quality.

Intel QSV vs CUDA/ect
https://www.youtube.com/watch?v=yvf05jVbPiU

http://www.anandtech.com/show/7007/intels-...c-perspective/8

This post has been edited by 1024kbps: Dec 28 2014, 11:40 AM

I used to encode video x264 with just CLI + Avisynth script,
self tuned command

Another nice GUI is MeGUI, which has a lot of preset setting that is noob-proof. those like to use over complicated setting are mostly concerned about the video quality of final output.

Anyway you guys seems drifting off topic already
To sums up, almost-fully hardware accelerated encoder produce lower quality video. The GPU accelerated encoder are mostly gimmick because they lacking a lot of options that will improve the video quality.
If anyone wants to high quality output just use handbrake, or any GUI with X264 or X265.

This post has been edited by 1024kbps: Dec 30 2014, 11:49 AM