SilenX Effizio EFZ-120HA5 CPU Cooler

SilenX was born in 1995 as a hobby between a group of college students.  Originally they wanted to make the computer systems they used silent, but there was a lack of variety of cooling products in the market with a focus on low noise.  Since its humble beginnings, SilenX has been released and offered a wide variety of low noise computer cooling products.  Today we'll be looking at one of their newest products, the Effizio EFZ-120HA5 CPU cooler.  With support out of the box for all of the modern CPU sockets (including LGA2011) and a low price tag, this cooler is meant for the mass market.  We'll see if the Effizio EFZ-120HA5 is able to live up to the SilenX name with low noise output, but without compromising cooling performance.


  • Rated dBA: 8-24
  • Dimensions: 125x85x153mm
  • Materials: Copper heatpipes, anodized aluminum fins
  • Weight: 648g
  • Fan RPM: <1600
  • Fan CFM: 32-86
  • Fan Voltage: 5-12v
  • Current Draw: <0.16A
  • Power Consumption: <1.92w
  • Intel Socket Compatibility: lga775, lga1155/1156, lga1366, lga2011
  • AMD Socket Compatibility: socket 754, 939, 940, AM2, AM2+, AM3

Build and Design

SilenX's Effizio EFZ-120HA5 CPU cooler was designed with good cooling performance and a low price point in mind. Noise reduction, SilenX's primary desire as a cooling equipment manufacturer, was also a strong focus.  The Effizio EFZ-120HA5 is a tower style heatsink, with copper heatpipes and aluminum radiator fins.

The fan included with the Effizio EFZ-120HA5 cooler is one of SilenX's Effezio 120mm fluid dynamic bearing fans.  At full speed, it's rated to output 86CFM of air while producing 24dBA of noise.  This fan is very quiet.  Subjectively, it's one of the quieter cooler fans we've used.  Inside of a case, you won't notice it at all.

Looking at the top of the heatsink, it's easy to see the angled configuration of the heatpipes.  If the heatpipes were perpendicular relative to the direction of airflow through the fins, it would create behind the line of heatpipes where airflow is slower, reducing the efficiency of heat transfer.

From other angles, it looks like the aluminum radiator fins on the Effizio EFZ-120HA5 are connected and intertwined which each other, but other than the sides of the heatsink and the points where they are soldered to the heatpipes, they don't touch each other.  If you look closely at the fins, you can see the little dimples all over their surface.  I am guessing this is to increase turbulence between the fins to help increase the amount of heat dissipation to the passing air.

SilenX makes efficient use of space on the base of the Effizio EFZ-120HA5 with the inclusion of aluminium fins.