Enermax Liqtech 240 AIO CPU Liquid Cooler Review

Enermax comes to us today with its Liqtech 240 AIO liquid cooling system for CPUs sporting healthy list of features including; copper cold plate with patented Shunt-Channel-Technology (SCT), seamless contact radiator fins, non-permeable flexible tubing, and a fan control system offering three cooling modes.

Introduction

Enermax has been on a tear lately with its push into CPU cooling. We recently looked at its Liqtech 120 AIO CPU cooler along with the budget-minded ETS-N30 air CPU cooler. Keeping the trend going we have the most powerful AIO cooler Enermax currently offers in the form of the Liqtech 240.

The Liqtech 240 is a sealed All-In-One / AIO water cooler for your CPU. It has a lot of interesting features and bears a striking resemblance to the SilverStone TD02 but with some differences. For starters, the Liqtech 240 uses flexible polyamide rubber tubing which help prevent leaks and corrosion. Additionally, the Liqtech 240 uses rubber molding on its radiator to damper vibrations from the fans.

With the stage set let’s see if Enermax can break free of the budget level performance seen in its prior coolers and provide truly top tier cooling.

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System Setup

Today's review takes place on our fourth generation [H]ard platform. The test bed consists of the ASUS Z87-Deluxe motherboard, eight gigabytes of Corsair 1600 MHz DDR3 RAM and the Intel Core i7 4770K.

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Test Methods

CPU

The biggest change you will notice is the removal of hardware testing. In recent years, Intel has shifted their methods of testing to software based and so we find it acceptable to do the same.

GPU

Once again we have an integrated GPU in our processor which alleviates the need for a discrete one. With the removal of a discrete GPU comes the advantage of not having an additional variable to account for.

The iGPU will not create any anomalies in our testing as long as we practice consistent testing methods.

Case

Corsair was kind enough to provide us with their Carbide series chassis. It provides excellent airflow and interior space and is a good reflection on current case design.

Thermal Paste

Noctua's NT-H1 thermal paste was selected as the paste of choice for a few key reasons. The thermal paste has been shown to provide excellent thermal conductivity allowing the heat sinks to better do their job. There is no observed curing time. That is, performance does not get any better over time. Any curing time could have introduced variables into the equation causing at best dubious results and at worst unreliable ones.

Temperatures

Ambient temperature will be kept at 25C for the duration of the tests and measured with a MicroTemp EXP non-contact infrared thermometer and cross referenced with the Sperry Digital 4 Point thermometer. Any variance greater then 0.2C will halt the testing until temperatures return within spec for fifteen minutes.

Idle

Idle temperatures will be recorded after a twenty minute period of inactivity. Any fluctuation during the last sixty seconds will reset the timer for an additional five minutes.

Load

Load temperatures will be recorded after a twenty minute period for air cooled systems, and thirty minutes for liquid cooled systems, at 100% load. To obtain this load we will be using AIDA64 Extreme Edition v3.00.2500. This places an even greater load on the CPU than before and includes some benefits. Because the load is so extreme we see the temperature vary wildly from 72C to 86C in some instances. To get an accurate reading we will utilize AIDA64’s ability to average the temperature over time. Given twenty/thirty minutes at 100% load we arrive at a temperature that accurately represents our heatsink’s performance.

Sound

Sound levels will be measured with a Reliability Direct AR824 sound meter from a distance of four feet away. With everything turned off and the room completely silent the meter registered a sound level of 38dB(A). This is a very quiet room where a simple pin drop could be heard. All sound measurements are recorded in the very late evening to further reduce any ambient noise.