Cerebras CEO Pushes Back Against Short Seller Report on Chip Lifespan

According to Cerebras Blog:

Overcoming Thermal Challenges

Building wafer-scale computer processors has historically been considered nearly impossible because silicon and circuit boards expand at different rates when heated, threatening to crack the hardware. Cerebras spent a decade solving this mechanical hurdle. Their patented assembly avoids abrupt temperature changes by smoothing current swings, circulating chilled water evenly, and using flexible electrical connections that move naturally as temperatures fluctuate.

Debunking the Lifespan Claims

The short seller report relied on the Arrhenius equation and GPU economic lifespan comparisons to argue a two-year hardware failure rate. However, Feldman pointed out that the report used incorrect inputs for the equation. TSMC qualifies Cerebras wafers for ten years of continuous operation at high temperatures, while real-world operational temperatures average below 65 degrees Celsius. This indicates a physical lifespan measured in decades rather than years, mirroring standard silicon behavior where chips become economically obsolete before they physically wear out.