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EFZ-120HA5 review
Considering that some of the more popular heatsinks can easily run 60 dollars without a fan, this cooler definitely scores huge in the bang-for-buck category. Coming in at $32.99 at many reputable resellers this is sure to be a big hit for SilenX. For this price point, one would be hard pressed to find a complete solution, with the fan and even the TIM, that would come close to the great ratio of performance and silence that this unit provides. Efficiency integrated into design is the key to this class of heatsink, and SilenX definitely pulls off a winner here!
EFZ-120HA5 detailsthessdreview review 
EFZ-92HA3 review
The 92mm fan on the SilenX EFZ-92HA3 heatsink rotates at up to 2200RPM which creates just 41.6 dBA noise. At its reduced fan speed of 800RPM, the EFZ-92HA3 heatsink hums along at 33.0dBA noise, which is a pretty quiet. At full fan speed the EFZ-92HA3 heatsink maintained a CPU die temperature of 17.1°C at stock fan speed and 29.0°C at reduced fan speed. Where the EFZ-92HA3 heatsink falls into its own is on sub-85W TDP processors where CPU heat output is much better matched to its diminutive size and 92mm cooling fan.EFZ-92HA3 detailsfrostytech review