Hello,i am running an ati radeon 5750 on a dual core cpu running at 2.4ghz with 4gb of 6400mghz ram speed, a stock 350 watt psu i am running with no issues but every now and then as im watching a 1080p bluray i get little fragments of picture distortion. i have no heat issues either. i dont really know what else it may be i' ve adjusted clock speeds and still have not found the reason i am on catalist 2010.0930