The GE9X's pursuit of greater thermal efficiency means components inside the engine must operate in an environment where temperatures can exceed 2,400 degrees Fahrenheit (1,315°C). The engine holds the title as the most powerful commercial aircraft engine ever developed, with a certified thrust rating of 110,000 pounds-force (490 kN). A few hundred million must be spared to acquire a brand-new Boeing 777X. Modern commercial engines are approaching thermodynamic and material limits that were once considered impractical for large-scale airline operations. The GE9X represents more than an extraordinarily powerful commercial engine.