When it comes to cooling solutions you really do expect the very best from Thermalright, and the SP94 was no let down. As the Pentium 4 processor increases its clock speed, the demand for a more efficient heatsink design becomes quite strong. Increased Pentium 4 clock speeds are not the only cause for a greater demand of high end cooling solutions. The Pentium 4 processor has also become a very popular overclocking item, and when amplifying not only the frequency but also the voltage, temperatures will rise drastically.