GMK Tech Neo X1 Mini PC: SteamOS Setup and Radeon RX 9070 XT Performance Testing

A walkthrough of swapping the RTX 5070 GPU for a Radeon RX 9070 XT in the GMK Tech Neo X1 mini PC, installing SteamOS via a Steam Deck recovery image, and benchmarking game performance at 1440p and 4K across multiple titles. The video covers the hardware assembly process, system configuration, and how each game performs with and without FSR scaling.

■ Hardware Build & Setup
- Neo X1 stock configuration with RTX 5070 and Ryzen 9 9955HX 3D (16 cores / 32 threads, 64GB SODIMM RAM, 120mm AIO cooler)
- ASRock Radeon RX 9070 XT (16GB) installation with 12VHPWR-to-dual 8-pin adapter
- Dual-boot setup with stock SteamOS 3.9.5 alongside Windows

■ Game Performance Testing
- Red Dead Redemption 2, Crimson Desert, and Doom: The Dark Ages at 1440p and 4K
- Forza Horizon 5, Spider-Man 2, and Cyberpunk 2077 with FSR 4/4.1 comparisons
- Ray tracing behavior on Radeon under SteamOS and Proton GE

■ System Overview
- Stock SteamOS functionality including Wi-Fi, Bluetooth, and Steam controller support
- TDP/TGP control limitations within SteamOS and third-party tool options

This is useful for viewers considering a Neo X1 purchase, those interested in running SteamOS on non-Deck hardware, or anyone evaluating Radeon GPU performance in a mini PC form factor. It helps clarify what to expect from game settings, FSR usage, and ray tracing before making hardware or configuration decisions.