So. . . egg on my face for this line (which I edited with strikethrough)
I should make it a point to re check the settings I mention rather than just trying to recall them off the top of my head
DXVA is obviously never an option in OpenELEC, but I do leave VAAPI enabled for the i3 2105 running OpenELEC version 2.99.2. VAAPI might have been working for a while in OpenELEC, but due to the issue I had with hardware acceleration the first time I ever setup XBMC I never thought to enable it. After I went to "check" in the stable release on my i5 and found it successful, then I toggled on VAAPI in OE and noticed similar 5% utilization
Well, according to this guy who Googled it and theorized about it, you're all wrong: http://forum.xbmc.org/showthread.php?tid=140534&pid=1336310#pid1336310 -- it will only play "fluently" on the HD4000 and Intel NUC. Sorry guys...
I can't really prove him wrong, but from what Renethx said above it shouldn't be different for any IVB processor. My OpenELEC box is using a sandy bridge i3, but I'd have to throw windows on there just to test. I might get a chance to do so this weekend, in the interest of science. Screenshot may or may not be forthcoming