my not soo old GTX 580 started to show severe artifacts in DX 11 titles like maxpayne 3 and medal of honour warfighter . it doesnt show artifacts in older games and some new games like most wanted 2 or ghost recon future soldier etc. Only in power demanding dx 11 titles. i made sure its not the driver or software but the gpu itself causing this weird artifacts. i checked the card in at least 3 pcs . with three different PSU. now i sent the card for rma but wondering how would they test it ? will they send it back saying its ok because in generel computing or dx9c games like cod or nfs series, it plays fine. and even though if they grant it for replacement which they should, what would be the replacement gpu ? another 580 or maybe more exotic 6** !! please share your thoughts with me and let me know if there is any easy way to convince them that the gpu is actually failing and already lost the ability to draw graphic correctly.