Reuters reports that Intel's ambitious plans for its high-end CPU chips have hit a roadblock. A recent report uncovers that the initial yield of Intel's Panther Lake (PTL) chips, leveraging the cutting-edge 18A architecture, has underperformed expectations. It has been revealed that only a fraction of the manufactured PTL chips meet the stringent demands of customers, primarily hindered by the suboptimal yield of the 18A architecture and the general deceleration in growth across both the foundry and CPU sectors. Intel had pinned high hopes on the 18A process technology, anticipating substantial advancements in chip performance and energy efficiency through two groundbreaking innovations: RibbonFET, a fully enclosed gate transistor, and PowerVia, an innovative backside power delivery technology. Nonetheless, it now seems that Intel's production trajectory is fraught with challenges.