The Scythe Glide Stream 140mm x 25mm Fan uses a similar blade design to the Kaze-Jyuni series with a smaller hub, with bigger blades. Along with this slits were added to the blades to reduce air resistance. This fan uses a standard 120mm fan mount spacing (105mm) to give you increased airflow with lower noise in a standrd 120mm fan location. This energy saving PWM fan can be used for case cooling and CPU cooling.