The Delta 92 x 25mm High-Speed Fan is an impressive high performance fan that moves 90 cubic feet of air every minute. With a near 2:1 airflow to noise ratio, this fan is a great choice for overclocking or other extreme cooling needs.
The Delta 92 x 38mm Super High-Speed Fan is an insanely high performance fan that moves over 175 cubic feet of air every minute. It also has an amazing over 2:1 airflow to noise ratio. This fan is a great choice for cooling components that heat up to temperatures similar to that of the sun's core.