CoolIT Freezone Thermoelectric CPU Cooler


Product(s): CoolIT Freezone CPU Cooler
Provided By: CoolIT Systems

Price: ~$399.99 USD (



CoolIT is quickly becoming known as one of the most extreme and high end cooling solution providers. They are now providing cooling solutions to big name companies such as Dell, Alienware, Hypersonic, Shuttle, Biohazard and Asus, quite an impressive line of customers.

Their previous high-end cooler was the Eliminator, (which we reviewed here), but we are going to take a look at the newest cooling offering from CoolIT, The Freezone. The Eliminator features a 3-TEC (Peltiers) Cooler that has a heat output of 125 Watts, while the new Freezone is a 6-TEC cooler that has a heat output of 175 Watts. There are other differences (Eliminator  has a max draw of 40 Watts of power, Freezone has a max draw of 56 Watts of Power), but we will take a look at these differences later on in the review, but basically it comes down to the fact that the new CPU's such as the Quad-Core from Intel are producing much more heat, and the Freezone is designed to handle that heat as well as give you the ability to overclock more than a normal air-cooling or even water-cooling solution would.


When you first look at the Freezone it looks like your self-contained watercooling setup, however its actually a "water chiller", and uses "environmentally friendly coolant" to quickly remove heat more effectively than air or water can, all without any risk of condensation. All this comes pre-assembled and installs easily inside of your case, so there is no need to have hoses running out the back of your pc like with traditional watercooling solutions. The Freezone is also completely maintenance free so you will never have to worry about your fluid levels, you can just install the Freezone and forget about it.

We will also be revisiting this review later on when the new MTEC control center module is available, but if you want a sneak peek at what its all about, head on over to the CoolIT page for more info.


Test System:




First Impressions and Installation:

Well the first thing you see is the box and packaging, which is very sturdy, and should have no problems standing up to the mail system.

Front of Box
Back of Box


After you get the box open, you quickly realize this is quite an extreme looking cooling setup. Everything is ready to install and you won't need to do any setup with the cooler itself, all you need to do is mount the main unit and adjust the CPU heatsink to the motherboard and your ready to go. There are quite a few extra bags of parts included which at first make you think you're going to have to assemble them, however they are all clearly labeled for each socket, so really you're never going to open most of them, just put them back in the box for safekeeping.


Top of Cooler
Bottom of Cooler


Side of Cooler
Fan (w/120mm Fan Adaptor)


CPU Heatsink
TCM (Thermal Control Module)


So now onto the installation, which at first glance looks like it might be a challenge. Well, it's not all that challenging at all, in fact it's pretty easy to get all installed.


As you can see in the pictures I have installed the Freezone into a Thermaltake Tsunami case, which featured a 120mm fan which I removed to make room for the Freezone (I had to use the included 120 to 92 mm fan adapter), once I had removed the fan the main chassis of the Freezone easily fit into the case and that pretty much finished installation. The CPU heatsink was pretty simple to use thanks to the enclosed hardware that was included, unfortunately you will have to remove the mainboard in order to get the CPU heatsink installed.

In the end installation took about 30 minutes, thanks to having to remove the mainboard and the 120mm fan in the Thermaltake case, overall installation was pretty straightforward and I never ran into any major issues.

One thing to note is that this is a rather large CPU cooling solution, and your going to want to make sure that it will fit into your case before you go out and get one of your own. I tried to see if installation was possible in another case I had on the bench (Zalman HD160XT - Reviewed Here), unfortunately the Zalman was not able to handle the Freezone, but I wasn't all that surprised since the Zalman is a HTPC case, but the point is your going to want to make sure you have a 92mm or 120mm fan in the rear of your case, otherwise you are going to be out of luck.



Main Module Installed
CPU Heatsink Installed


Cooler Installed
Cooler Installed (2)


As you can see in the pictures the unit is quite large, but easily fits into most cases. Its not the most flashy looking cooler, but it does the trick and looks decent enough.

CoolIT Systems Freezone Specifications:


CPU FHE (Fluid Heat Exchanger)


Design: Monolithic Copper, mulit-cell, single channel


Dimension: 42mm x 42mm x 17mm

Weight: 195g


TCM (Thermal Control Module)


Design: Dual IC SMT PCB w/outboard IC sensor


Input: 12VDC, 5VDC


Weight: 30g

Function: Thermal controller to adjust TEC and fan power output


Chiller and Pump Module




Design: Dual dissipation plate, anodized alloy, laminar flow array


Dimensions: 122 x 65 x 90mm

Weight: 850g





Design: Six solid-state head pump wafers


Dimension: 40 x 40 x 3.5mm (each)


Weight: 20g (each)

Function: Active coolant thermal reduction



Chiller FHE's


Design: Dual anodized alloy distribution, mulit-channel w/laminar flow


Dimension: 121 x 41 x 12 mm (each)

Weight: 80g (each)





Noise: 26dBA - 37dBA


Bearing Life: Enhanced life ceramic


Life Cycle: 50,000 Hours


Dimensions: 92 x 92 x 25 mm

Function: Heatsink conversion, chasis exhaust



Pump and Reservoir


Design: 12VDC coreless outrunner pump w/integrated expansion vessel


Bearings: Dual in fluid sapphire bearings


Noise: <15dBA


Life Cycle: 50,000 Hours


Dimensions: 50 x 50 x 75 mm

Weight: 360g


CoolIT Systems Freezone Testing:

Our testing of CPU coolers is pretty straight forward; we test them at stock clock speeds at both idle and full load speeds. For the overclocking results I took temperatures at idle and full load also. All temperatures were taken after the processor had been running for 24 hours to ensure a consistent result and to ensure the thermal paste has had time to properly set.

I have taken all temperatures using CoreTemp. CoreTemp takes a temperature from the CPU core, and allows for much more uniform results across different motherboard and CPU platforms. These temperatures may seem higher than other temperature recordings; because chances are they are taking temperature recordings using the diode underneath the CPU, which isn't able to be as accurate, and can really fluctuate between different brands of motherboards.

For all tests I used Arctic Cooling MX-1 High-Performance Thermal Compound.

All stock speed tests were taken using an Intel Core 2 Duo 6300 Processor running at stock speeds of 1.86 GHz. All overclocked results were taken using an Intel Core 2 Duo 6300 running at 2.13 GHz .


(Click for full-sized chart)


Well, there you have it, the Freezone pulled off some pretty incredible numbers. 22 Degrees Celcius at stock speeds with the CPU idle is quite amazing, beating our second place competitor (Gigabyte 3D Galaxy II Watercooling Kit) by 17 degrees. When a full load was applied to the CPU the results became a bit closer, but still the Freezone was able to remain 8 degrees Celcius cooler than the Gigabyte watercooling kit.


With the Freezone running at low fan speeds, the results are not as impressive, but still able to keep up with most of the other coolers we have tried. This is acceptable if you are using the system for everyday tasks such as internet and e-mail and want a near silent system.

One thing I noticed is the need for some good airflow in your case to keep the Freezone performing like it should. When I first installed the Freezone I accidentally forgot to hook up my front fan in my case (120mm intake fan), once I got everything up and running I was pretty happy with the numbers and went about testing, only to later realize that I had accidentally left the intake fan unhooked. Once I had realized what I had done and got everything hooked back up again, I was pretty happy to find that the temperatures dropped even more (6-8 degree Celsius), so your definitely going to want to make sure you have good airflow otherwise you're not going to get the performance that you could be getting. 


CoolIT Systems Freezone Conclusion:

This is definitely one extreme cooling solution, and really there aren't many products on the market that can beat the performance of the Freezone. However, performance comes with a price tag, a pretty steep one. The price of this unit is definitely going to be the biggest drawback for the majority of users, however if you're not too worried about the price and want the best, you can't go wrong with the Freezone. Sitting at idle this unit can really put up some impressive numbers and I was pretty shocked to see my CPU temperature sitting at 22 degrees Celsius, however once you start to put a load on the CPU, the numbers go up pretty quick. That being said, 34 degrees Celsius at stock speeds and 100% CPU usage is not bad at all, we haven't reviewed anything that can beat it.

Now the performance is very good with the Freezone, and that's going to be the reason majority of users purchase a unit like this, this is geared towards top-end gear such as the Quad-Core chips from Intel, if you're running a low-end chip you're probably wasting your money with an expensive cooler like this, but if you're looking for overclocking headroom, well you won't be disappointed.  On the CoolIT page the price of the Freezone is listed at $399.99 USD, which is quite expensive, however if you look around you can definitely find it cheaper. Newegg has it priced at $319.99 which is a little better. Still, a $300+ USD cooler is out of a lot of peoples price range, but if you're running a nice $1000+ Quad Core setup, then this really isn't all the unrealistic.

The Freezone does also offer adjustable fan speed, which is handy if you want to make the unit a little quieter. At full speed the fans are noticeable, but if you go down to the low setting you won't be able to hear them over other system noise. This was a nice option to have; especially if you aren't running your system full out you can reduce the noise. The adjustment is done by a potentiometer, which isn't the easiest to adjust, but normally you won't be adjusting the speed very often so it's not a huge deal. It would be nice to have automatic adjustment, instead of having to manually adjust the fan speed. Both of these features can be added with a MTEC control module, which is currently still unreleased, but will features automatic fan adjustment and a few other features, we will be taking a look at this once it becomes available. It is unclear whether this will be included with future Freezone coolers, or will have to be purchased.

When running at full speed, this cooler is pretty tough to beat, however, when you go down to low fan speed (silent), the numbers aren't so incredible anymore, however even at silent mode the temperatures sit around where your average air-cooling solution would be so if you are using your computer for everyday tasks such as web-surfing, silent mode is a definite option, and still considerably cooler than a stock-cooling setup would be.

At the end of the day this is one of the best cooling solutions I have ever seen or used, you can't find many other out of the box solutions that you can install in under 30 minutes that can perform like this. If you aren't worried about the price tag, then you'll love this cooler.

The Freezone earns our "Top Pick" award, it's really is an incredible cooler and performs great.



  • Great Performance
  • Easy Installation
  • Compatible with AMD and Intel Processors
  • Coolant Never Needs to Be Changed
  • High-Quality Construction
  • No Assembly Required



  • Price
  • Fan Speed Adjustment Could Be Easier Rating
Software Pack:
Total Score 9.0


I'd like to thank CoolIT for allowing us to review the Freezone. If you have any questions, comments, or general feedback, please leave it at the "Comments" link below.