[noinsight]

The open source drivers/cards were solid for a good while on my old computer but I bought a new one in May and I got actual hardware level PCI errors with two different AMD cards on the Intel X99 chipset (within seconds of booting I would start getting error correction messages in my dmesg and the computer would hang within hours). I managed to stop the errors with kernel flags (pcie_aspm=off or pci=nommconf, either seemed to stop them) but my system was still completely unstable as the drivers/cards eventually went nuts regardless.

I bought an nVidia card and didn't have to touch anything and it's completely stable (in the same exact PCI slot).

I might try AMD again in a year or two as I prefer their model of actually supporting and writing open source drivers in contrast to the scummy nVidia whose cards now require a signed firmware that they won't release to the open source community after we got the reverse engineered open source drivers (well, they did release one now for the 9xx series after they released the 10xx series).