I've been using VLC for a long time, last year I moved my PC into the living room and went with a 65" 4K TV. I didn't know that a media player utilized GPU to enhance video playback existed and when I first heard about it,I dismissed the benefits as placebo effect and gimmicks but installed it to try it out anyway. Didn't do a direct comparison between different media players, just setup basic upscaling settings and didn't do any further testing. Fast forward to last week, I didn't know how good I had it until I decided to do a fresh OS install and tried media playback before reinstalling MPC&madvr combo. This time around I played with the settings even more. I pushed the IQ settings a lot higher, to the point where the GPU couldn't handle it and playback was stuttering (no SLI support sadly) and then backed off a little til playback was smooth again. To compare it, this must be what before and after cataract surgery feels like. Few caveats: Playback disc/file has to be decent, not uncompressed BR but not terrible either. 720p doesn't work quite as well as 1080p upscaling. RGB range needs to be set to full and to get the most out of it display should be calibrated through http://www.lagom.nl/lcd-test/ A setup guide can be found here: http://www.avsforum.com/forum/26-home-theater-computers/1357375-advanced-mpc-hc-setup-guide.html Keep in mind this setup guide was done with older GPU's in mind. The better the GPU, the better image quality you can push. My 980TI is nowhere near able to max out the settings but the image quality keeps improving though the GPU can't keep up for a smooth playback so I have to take it down a notch. For reference this is a screenshot of the settings I'm using, you'll have to experiment with other settings to get the most out of it: If you watch the Game of Thrones season 6 finale through this setup, in the opening scenes, Tommen is getting dressed, you can see dust specs floating around. Grab any content you have seen before with non GPU utilizing player and you will instantly notice the difference in image quality. A lot more detail and sharper image.