Is it another 290x?
Yes. The RMA status checker on the MSI website states it's another 290X Lightning but with a different serial number to the one I sent them, so I'm assuming it's just a refurb.
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Is it another 290x?
The exact same way? As in the same kind of artifacts followed by a black screen?
That's odd.
Have you tried reinstalling drivers on a clean install of drivers (DDU), and out of curiosity do you have another PC u can try the card in? A friends or what ever.
Would really suck if it's broken as well, but it does makes me suspicious that something else could be causing it.
Yes, exact same. Different driver didn't fix it. This is also a clean install of Windows 10 too
I may have done something stupid too, as the system won't post with the card in, after I ran OCCTs PSU test. Black screened, fans on the GPU ramped up to 100% now it won't post. With my old 5450 that I have lying around, it posts fine.
Beginning to suspect my PSU might have something to do with it.