An eGPU, or external graphics processing unit ... First off, you might wonder what would happen if you just added an RTX 4090 to your laptop. Well, as it turns out, this would be a colossal ...

GPU: RTX 4070 Ti / RTX 4090 via Razer Core X Chroma over USB4 ... so we'd naturally expect it to outperform the eGPU contenders, all of which are limited to four or eight PCIe lanes.