Core Viewpoint - The article discusses several historically failed processors, analyzing their shortcomings and the lessons that can be learned from these failures [1]. Group 1: Intel Processors - Intel Itanium was designed to simplify hardware and optimize software but failed due to compiler limitations and incompatibility with existing architectures, leading to the collapse of Intel's 64-bit strategy [2]. - Intel Pentium 4 (Prescott core) faced severe pipeline blocking issues and high power consumption, resulting in poor performance despite record revenues for Intel [3]. - Intel Core i9-14900K, while powerful, is criticized for being a minor upgrade over its predecessor with high power consumption and thermal issues, leading to stability problems [10][11]. Group 2: AMD Processors - AMD Bulldozer architecture aimed to improve efficiency by sharing hardware resources among cores but ultimately failed to meet performance expectations and nearly led to AMD's bankruptcy [4][5]. Group 3: Cyrix Processors - Cyrix 6x86 processors suffered from poor compatibility and stability, failing to differentiate themselves from Intel and AMD, which contributed to Cyrix's decline [6]. - Cyrix MediaGX, an early integrated SoC, was technologically ahead of its time but ultimately failed due to poor performance and compatibility issues, leading to widespread disappointment [7][19][20]. Group 4: Texas Instruments and IBM Processors - Texas Instruments TMS9900 was limited by its 16-bit address space and lack of compatible peripherals, leading to its rejection by IBM in favor of Intel's 8086 [8]. - IBM PowerPC G5 was unable to achieve the promised performance and power efficiency, resulting in Apple shifting to Intel processors [13]. Group 5: Qualcomm and Other Notable Mentions - Qualcomm Snapdragon 810 faced significant adoption issues due to overheating, leading to a lack of interest from high-end device manufacturers [12]. - The Cell chip, while powerful in specific applications, was impractical for general use due to its complex architecture and optimization requirements [16].