No the x4500 gma doesnt support HD Video. Note that this card was designed in 2006 for mid end laptops. The only integrated graphics card that support lag free HD Playback is the intel HDxxxx series. You can find them in 2nd gen intel cpus like i5 2400 (hd2000), or i72600k (hd3000) 0r even in the upcoming ivy bridge cpus (with hd4000).