I've been experimenting with different graphics cards and noticed something odd. I tested an RTX 3070, 3060 Ti, and 2060 Super on my old Sandy Bridge computer, and they all worked perfectly. However, when I tried booting with an RX 7600 XT, it got to the BIOS but black screened when trying to load Windows. I verified the GPU was fine by testing it in another system. I'm curious if the same issue would occur with RTX 4000 or 5000 series cards, or even with RX 7000 and RX 9000 series GPUs. What could be causing this incompatibility? I've heard that Nvidia cards generally have better backward compatibility, but I'm looking for specifics. It's also strange since I've seen people successfully run RTX 4070 and 4080 on older setups, usually due to UEFI BIOS support, which my system has. I really want to understand the exact reasons why my setup isn't working, not just whether it might work or if it's advisable.
2 Answers
It's tricky to pinpoint the exact cause without knowing the full specs of your setup, but it could be a compatibility issue between the motherboard's chipset and the newer GPU. Sometimes the BIOS version might need updating to support newer graphics cards. Also, it's worth noting that while some people have success with newer GPUs, each motherboard has its own limitations and quirks that might not be apparent at first glance. It seems like Nvidia cards tend to play nicer with older hardware, while AMD might be a bit finicky, especially with the latest models.
Also, don't forget the power supply ratings. It may seem fine, but check if it’s delivering enough power for the newer cards. That can sometimes be a silent killer.
That's an interesting question! Generally, older motherboards may not support the newer hardware standards or power requirements of modern GPUs. Nvidia tends to give a bit of leeway with backwards compatibility, while AMD might lock cards to newer tech. It sounds like your board’s architecture isn’t aligned with what the RX 7600 XT is looking for, leading to that black screen. Just because other cards worked doesn’t mean new models will, so it’s worth double-checking compatibility lists from the motherboard manufacturer.
Exactly! And sometimes even minor BIOS tweaks or settings can make a significant difference. It's always good to check those obscure manual notes.
Thanks for the input! I might explore BIOS updates and double-check compatibility charts to see what fits best.

Yeah, I've definitely seen the opposite—classic setups running well with newer GPUs. It all comes down to how the components interact, but your motherboard's age plays a significant role.