Yes, you can use an eGPU with a 40Gbps USB4 port, but there are a few things to consider. USB4 is backward compatible with Thunderbolt 3 (TB3) and Thunderbolt 4 (TB4), so most TB3 or TB4 eGPU enclosures will work with a USB4 port. However, it’s important to ensure that the USB4 implementation on your device supports Thunderbolt 3/4 protocols, as this is required for full compatibility with eGPU setups. Most modern devices, including those from Apple, AMD, and Intel, provide this compatibility, making it possible to connect TB3 eGPUs via USB4 ports effectively.
When choosing an eGPU enclosure for a 40Gbps USB4 port, look for one that supports PCIe tunneling, which is necessary for eGPU functionality. Although some eGPU solutions are marketed as USB4, they are typically based on Thunderbolt 3 technology, like the GPD G1. For optimal performance, it’s also recommended to use high-quality Thunderbolt cables and ensure your device’s drivers and firmware are up-to-date. Overall, using an eGPU with a USB4 port is feasible and offers a flexible, high-speed connection for external graphics, but double-checking compatibility and specifications is key for the best results.