My Specs are:
E8400, Core2Duo, 3.0Ghz
Win 7 x64 (Fresh re-install just did it today)
Radeon HD 6450 (the specific card HERE
HDMI Out to -> LG 42" 42LK520
I originally had issues with tearing that I resolved by both manually setting the refresh rate of the monitor to 24hz, and using XBMC's sync playback to framerate options...
I'm using the K-Lite codec pack and I have no trouble playing HD videos of any size on my rig through my monitor. I get decently low CPU usage (pic attached) when I engage in HD Playback and it displays flawless on my monitor, but, when I move the video over to my LCD (I have it set up as extended desktops), it gets periodically choppy... but theres not any more of a spike in CPU or memory usage than when it's played through my monitor...
I've been trying to get this to work perfect for almost three weeks and im at my wits end... I'm pulling out my hair and about to buy a media streamer even though my LCD and my rig are 10 feet apart... any help would be greatly apprecaited...