Hello. So, I bought new Sapphire R9 390 with backplate (slightly more factory OC'ed than non backplate version). First thing I saw was full screen of artefacts, then was Bios window and everything later was fine. Later few times I saw some artefacts in Assetto Corsa and once on desktop after pc sleep. My PC is old, Intel i5-750, Gigabyte P55A-UD3, but PSU (Seasonic X-760) and RAM are not so old. Also I still have Asus GTX660, which works flawless. PS. I have tried BIOS button on Sapphire, nothing changed. http://imgur.com/a/eW3B7 First question, are artefacts on boot (before bios) normal or it's because of faulty gpu? Any way to test 8GB vRAM?