So far my RMA card is not having the black screen (yet?). It's overclocking quite wonderfully though, by default without any changes to power and temp or voltage, it boosts 2025 Mhz. I've been letting Witcher 3 run overnight (just standing at one place thought) and in the morning the game's still running.
It looks like I got an old card though since the serial number is 2624 from factory 29 and I have the plastics stuck under the screw. Maybe they fix the PCB but put on an old shroud?
Any idea how I can get the rest of the plastics out? Tweezers aren't not working since they're too tight. My cheap screw set from the dollar store with the 1.5 Hex and T6 bit doesn't fit and I'm definitely not going to pay $50 for an iFixit set just because EVGA messed up their side.
FYI, my old card serial was 5261 from factory 25 and it has black screen.