Old MI50 GPUs Resurrected: Merged llama.cpp Forks Run Qwen3.5 122B on 4x MI50 16GB Cards

r/LocalLLaMA·medium signal

A practitioner merged gfx906 and Turbo3 forks of llama.cpp and successfully ran Qwen3.5 122B on four AMD MI50 16GB GPUs (271 upvotes, 104 comments). The MI50, a data center GPU from 2018, gets new life through community fork work. This demonstrates the local inference community's ability to extend hardware lifecycles far beyond manufacturer support, running frontier-class models on 7+ year old hardware.