hi there. i've finally OC'ed the card and i've totally checked different tests, and no artifacts at all. but very very rarely, when i play HL2 or VampireMBL (SOURCE engine both), i get some flickering white dots for an instance on the walls or floors. it doesn't happen anywhere else or in other games. i was wondering if it's an artifact problem (and so should i reduce my OC values?) or is it just a minor glitch with the SOURCE engine? thanx in advance.