No, you cannot use 2 TB3 devices with TB3 Add-in-Cards.
No, you cannot use 2 TB3 devices with TB3 Add-in-Cards.
I own a TRX40 motherboard paired with a Thunderbolt card. I’m interested in how this configuration performs. Did it meet your expectations? Can both Thunderbolt ports work with eGPUs, and what speed do they deliver—x4 or x2 per lane? I’m new to non-Apple hardware with Thunderbolt and want to understand the details. I’ve read some mixed opinions about best practices, especially for gaming, but I’m not sure how reliable those reports are. I’ve seen claims about “optimal setups” that seem to focus mainly on gaming. My Apple devices haven’t had these problems, and I’ve noticed many users overlook how the PC’s Thunderbolt controller is managed. Usually, I use an iMac Pro and connect two ports for Windows (with 3090s), running x4 on macOS with AMD GPUs for rendering tasks like Redshift, Octanex, and Cycles. When using eGPUs for rendering, each port offers full x4 PCI lanes on the iMac Pro, meaning performance isn’t affected noticeably compared to internal connections.