Can you safely stack 4x RTX 5060 Ti GPUs with undervolting?

A Reddit user is experimenting with a dense multi-GPU setup: four NVIDIA RTX 5060 Ti 16GB cards on a single motherboard. Despite the 5060 Ti being more power-efficient than previous generations, the cards sit extremely close together, raising questions about heat dissipation and long-term hardware health. The user intends to undervolt the GPUs to reduce power draw and heat output, and they have ten case fans for general airflow—but no liquid cooling. They want to know if the physical spacing (or lack thereof) is a real risk or just overthinking.

This is a common dilemma for cryptocurrency miners, AI researchers, and hobbyists running multiple GPUs. Undervolting can lower peak temperatures by 10–20%, but it doesn’t change the fact that cards placed directly adjacent to each other can trap hot exhaust. Without adequate side-to-side airflow (common in blower-style cards or water cooling), VRAM and MOSFETs may degrade faster. The Reddit thread debates whether ten fans are enough to compensate, with some commenters pointing to successful long-term minifarms that used similar density with undervolting—but also warning that sustained 90°C+ VRAM temps can shorten card lifespan.