Fractal Design Prisma AL-14 PWM in detailFractal Design claims the Prisma models as its most efficient 140mm fans. According to the specs, they are supposed to achieve the highest airflow at a lower noise level than the Aspect 14s. However, this is physically impossible due to the constructional differences of the two fans. The title … Continue reading Prisma AL-14 PWM: The best 140mm fan by Fractal Design?