u/Far-Pomegranate-4022

Hi everyone,

​I am currently running a system with a Gigabyte X299 Aorus Gaming 9 and an i9-10980XE. I recently tried upgrading to an RTX 50-series (Blackwell) card, but the system fails to boot or even recognize the GPU.

​I want to emphasize that I've already ruled out power and BIOS issues:

• ​BIOS: Updated to the latest version available.
• ​Settings: CSM Disabled, Above 4G Decoding Enabled, and PCIe set to Gen3.
• ​PSU: Corsair AX1200i (1200W Platinum). I am using three original 8-pin cables, so power delivery is definitely not the issue.

​Since the RTX 50-series refused to post despite these efforts, I’m planning to switch to the Radeon RX 9070 XT.

​Has anyone successfully booted an RX 9070 XT (or any RX 9000 series) on this specific motherboard or a similar X299 platform? I’d like to confirm if there are any known successful cases before I commit to the new card.

​Any insights would be very helpful. Thanks!