SilenX Effizio EFZ-120HA5 Review

Today we will be making the review of the SilenX Effizio EFZ-120HA5 CPU cooler, a budget cooler that has a large compatibility list and promises silent operation combined with good performance.

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SilenX has been a privately-owned and operated company based in southern California since 1995. There are several research and design facilities in addition to our primary warehouse facility and our renowned technical support and customer service center. Originally a high-end systems integrator for silent computers, SilenX shifted its focus to manufacturing silent PC components in 2002 and established factories in the United States, China, and Taiwan.

Let’s take a look at the  SilenX Effizio EFZ-120HA5 specs taken directly from the company website:

silenxspecs - SilenX Effizio EFZ-120HA5 Review

Package and contents


The SilenX Effizio EFZ-120HA5 comes in a red cardbox which has a transparent part so we can see the heatsink. It is stated that it offers superior performance with quiet operation. Furthermore, we can find the processor emblems with which is compatible at the bottom.

At the back side of the box we can find the cooler’s specifications, along with a detailed socket compatibility list followed by the key features of the cooler.

Upon opening the box top cover, we find the contents nicely organized in a plastic transparent container.


A Closer Look – Accessories


Inside the package we can find mounting kits for each socket type, categorised in separate plastic bags. You will find everything here related to the cooler’s installation. Rubber anti-vibration clips are provided for the fan’s mounting on the heatsink. There is also a separate plastic bag to support Intel’s new LGA2011 socket, as well as a piece of thermal paste compound.

There are two mounting back plates included, but one of them is used to mount the bottom of the cooler onto the motherboard securely.

The supplied manual provides easy to understand installation instructions with schematics and step by step guides.


A Closer Look – The Fan

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Inside the package we can find one SilenX EFX-12-15 fan which is using third generation fuild dynamic bearing. The rated airflow is 74CFM at 15Db. Of course, the installation of a second fan on the heatsink is possible.


A Closer Look – The Heatsink


The SilenX Effizio EFZ-120HA5 follows the tower design pattern and has a solid build. It utilises aluminium fins accompanied with six copper heatpipes. Its dimensions and weight are average and generally you can say it is targeted towards mid-range systems.

At the top of the heatsink there is a nice PC Cooler logo along with the heatpipes’ starting point.

At the above pictures you can see how the cooler looks like after installing the fan. Mounting the fan with the included rubber clips is easily done, although we would have preferred a metallic clip-on design that would surely make things even easier. 

The copper heatpipes are having direct contact with the processor’s surface to further increase the heat dissipation. To enhance cooling performance, SilenX have included an additional heatsink block at the top of the cooler’s base.


Test Setup and Procedures
The machine’s specs on which we tested the cooler are:

Processor: Intel Core i7 920
Motherboard: Asus P6X85D
RAM: 6 GB Mushkin 6-7-6-18
VGA: Gigabyte GTX480 1536MB
HDD: Velocity Raptor 150GB
PSU: Nexus 1000W
Case: Thermaltake Armor VA8003BWS
Operating System: Windows 7 64-bit

We ran temperatures tests in 4 system’s states:


  • Idle, default frequencies
  • Load, default frequencies
  • Idle, i7 920 overclocked to 4GHz
  • Load, i7 920 overclocked to 4GHz

We tested Silenx’s cooler against:


  • Noctua NH-D14
  • Titan Hati

We used Noctua’s NT-H1 thermal compound in all occasions. For getting the system to maximum temperatures, we had Prime95 running for one hour.

All the tests were made in a room temperature of 24 degrees celsius.


Test Results

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To tell the truth we did not expect the cooler to deliver such high levels of performance. It managed to keep our i7 920 at low levels while remaining silent during operation.
Of course we expect SilenX to release a dual-fan bundle version which will surely have a slight impact on noise levels but will greatly improve performance.
The design techniques along with the additional top-base heatsink have certainly paid off for SilenX who have surely released a killer product out in the market.

Costing around 30 euros across Europe, the SilenX Effizio EFZ-120HA5 is the ultimate alternative to a stock cooler, or even an addon for users wishing to overclock their machines.


(+) Exceptional Performance/Noise ratio
(+) Solid build quality
(+) Price


(-) None


Thus, we can surely give the SilenX Effizio EFZ-120HA5 our Editor’s Choice award.


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