In laptops is MXM card better then onboard discrete chip?

ADT-Link MXM to PCIe x8x16 eGPU adapter mxm slot Built on the latest NVIDIA Ampere and Turing architectures, Advantech MXM GPU cards gemix slot review Ibase unveiled a Linux-supported “MT800M-P” motherboard for AI applications with an 8th Gen Coffee Lake CPU and an MXM slot for Nvidia GPU

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