AI Server Cold Plates
GPU/CPU high-power cooling with FSW friction stir welding — low thermal resistance, excellent temperature uniformity
AI Chips Run Too Hot for Air Cooling
NVIDIA H100 draws 700W per chip; B200 hits 1000W. Traditional air cooling is essentially ineffective at this heat density — liquid cooling is not a "nice to have" but a "must use." Cold plate thermal resistance must be pushed below 0.05°C/W, and temperature uniformity ΔT must not exceed 3°C — miss by a little, and the GPU throttles, cutting compute performance.
FSW Is Our Strength
The core process for cold plates is FSW (Friction Stir Welding) — joining two aluminum plates with pre-milled internal channels. FSW advantage is that the material does not melt during welding — low deformation, excellent leak-tightness, narrow heat-affected zone. Bisite has 3 FSW machines, with weld seam strength reaching 90%+ of the base material.
From Design to Production
Many customers come with thermal solutions, not mature manufacturing drawings. We provide design-for-manufacturability input: channel bend radius cannot be too small or flow resistance increases; inlet position affects temperature uniformity; plate thickness and fin height must match the welding process. Prototyping delivers in as fast as 7 days; volume production in 4 weeks. Every plate undergoes pressure testing and helium leak detection; thermal performance testing arranged per customer requirements.