Seeking advice on cases for dual RTX 3090 LLM workstation

A user is building a local LLM workstation using an ASUS Crosshair VIII Hero motherboard and two power-limited RTX 3090 GPUs, seeking recommendations for compatible computer cases.

• The build includes one Gainward Phoenix RTX 3090 with plans to add a second used card, both limited to approximately 250W.
• Potential case options under consideration include the Fractal North XL Mesh, Meshify XL 2, and Lian Li O11D EVO with a vertical riser.
• The author requests community feedback on stable configurations, sustained GPU temperatures during inference or training, and experiences with vertical mounting.

The post aims to gather practical insights from users who have successfully assembled dual-GPU air-cooled systems for machine learning tasks.