Dual RTX 3090s with 3D-printed bracket run Qwen 27B locally
Two 3090s + custom bracket = 48GB VRAM for a 27B parameter AI model at home.
Deep Dive
Reddit user anthonyg45157 added another RTX 3090 and printed a bracket to angle the radiator for GPU clearance, ending up loving the look — now qwen 27b goes brrrrr.
Key Points
- Two RTX 3090s provide 48GB VRAM, enough for Qwen 27B (27-billion parameter model) inference.
- A custom 3D-printed bracket was required to angle the radiator and fit both GPUs in the Thermaltake Core P3 case.
- The user reports fast local LLM performance, reducing dependency on cloud APIs for AI experimentation.
Why It Matters
DIY dual-3090 builds make local LLM inference accessible, cutting cloud costs and enabling private AI workflows.