This is awesome, thank you ericgur!
With my main rig using MPC-HC (madVR+LAV) I compared the power draw of my system QSync vs DXVA2 (native) on a 4K UHD (timescape video, from renethx's 4shared folder), around 20w less.
With DXVA2 around 150-155w from the wall, with QS around 130-135w.
With madVR I was using CRom(AR+LL) and smooth motion was turned, queue's as 12/12 and 10 frames in advance and the usual general settings.
I have the HD4000 in my rig set up as a headless, don't have Virtu and have my monitor attached to the HD5750. Also the HD4000 is at stock settings, didn't touch any clock or voltage settings.
E: I'm gonna go and try this with my HTPC (Pentium G2120) now to see how it works. Just downloading the drivers first and then gonna go and enable the IGP from the BIOS.
Well this is rather weird.
I have Game of Thrones bluray on my rig, backed with makemkv so it's quite high bitrate. I used the E01 the beginning sequence with the theme song.
With DXVA2 native decoding in LAV I was seeing around 57w draw. Rendering time was in the 28ms range (have to downscale 1080p -> 1360x768) and the madVR scaling algorithm was CRom(AR+LL)
Now when I switched to QS decoding the power draw increased to 60w and the rendering time halved.
Is this odd or is this just how it's supposed to work? 3watts here or there but it's just interesting.
Edited by lagittaja - 6/2/13 at 3:43am