Mini PC with NVIDIA vs AMD GPU

Some AI payloads require NVIDIA. 
A mobile version is even available in mini-pcs

 Amazon.com: PELADN HI-3 Pro Mini PC with Intel Core i5-11300H, MX 450 Graphics, 16GB RAM, 512GB M.2 SSD, HDMI & Micro Tower - Compact and Powerful Desktop Computer : Electronics

$350

Amazon.com: HUNSN Mini PC, HTPC, Small Server, Desktop Computer, Windows 11 or Linux Ubuntu, Intel I5 11300H, MX450 GDDR6 2G Graphic, BA05, 2 x HDMI, Type-C, 8 x USB, TPM2.0, 16G RAM 512G SSD : Electronics

Amazon.com: Trycoo HA-4 Mini Gaming PC,AMD Ryzen 7 7735HS Processor(8C/16T, 4.75GHz) Mini Desk Computer,Win 11 Pro Mini Computer with 32GB DDR5 RAM/512GB PCIe 4.0 SSD,WiFi 6/BT5.2/Support Expansion 4TB SSD : Electronics

$340

still, AMD provides more performance for money

680M vs MX450 [6-Benchmark Showdown]

Radeon 680M outperforms GeForce MX450 by an impressive 65% based on aggregate benchmark results

Amazon.com: Beelink Mini PC SER6 6900HX AMD Ryzen 9 Processor(8C/16T, up to 4.9GHz) 32GB DDR5 1TB SSD Radeon 680M Graphics Micro Computer, HDMI 2.1/USB4/WiFi6/BT 5.2, Home&Office Mini Desktop Computers : Electronics

$495