well i went ahead and dusted out what was there with some compressed air and also removed and reseated the vid card. My CPU idle temp has dropped about 6 degrees to now be 30 degrees C. My GPU temp has also dropped to be 60 degrees C idle with it getting to about 75 under load. I also upgraded to the latest nvidia drivers. Needless to say i experience no artifacts now. I have a feelling my vid card may not have been sitting pretty and reseating has helped somewhat.