I was doing a little bottleneck experiment with some ancient builds (of which I have too many of), and I discovered that my Asus P7P55D-E LX (1156) board won't work with any RX-5xxx series AMD cards. Yet it works fine with the RX-5xx series and older cards. It also has no issue with any GTX 16xx/RTX 20xx cards and older. I haven't tried any newer Nvidia cards yet because I don't have any. The RX-5xxx cards produce the POST display at boot, but that's as far as it gets when W10 or any install disk/flash drive tries to load.
I guess the issue is the UEFI vs Legacy BIOS thing, yes? Did AMD make their newer cards non-legacy BIOS compliant?
I guess the issue is the UEFI vs Legacy BIOS thing, yes? Did AMD make their newer cards non-legacy BIOS compliant?