Closed Loop AIO Liquid Coolers: 14-way Mega Roundup Review
by E. Fylladitakis on February 12, 2014 7:00 AM ESTEnermax
Enermax gained popularity and reputation through their high quality power supply units. The company has been around for decades but has only more recenty begun diversifying into cases and cooling solutions. They have also added a couple of new AIO liquid coolers into their product range and they shipped us two of them for this review. Unfortunately, these coolers are not yet available in the North American region.
Enermax Liqmax 120S
The first AIO liquid cooler from Enermax is the Liqmax 120S. The Liqmax series consists of two products, which are essentially the same cooler but with a different fan. Both models are depicted on the box. We received the LM120S-HP model, and the fan of lacks LED lighting on this model.
Even though the bundle of the Liqmax 120S is nothing special, it comes well presented, with the mounting hardware packed in separate nylon bags. There also is a manual with installation instructions and a syringe with thermal compound included. The biggest attraction of this kit however is definitely the fan. Although it looks like a simple, black fan without lighting or any notable features, there is a switch on the fan's engine that adjusts the speed range of the fan. There are three settings: 600 to 1300 RPM, 600 to 2000 RPM and 600 to 2500 RPM. By default, the fan is set on the 600 to 2000 RPM range.
Visually, the Liqmax 120S is not much different from most other AIO coolers with 120mm wide radiators. The radiator, measuring 32mm deep, is slightly thicker than the one used by the Seidon 120V and the Corsair H75. There are almost no deformations or imperfections about the aluminum fins, although a couple of them are slightly bent. Enermax went with black corrugated tubing, which is durable but a bit of a pain to turn. At least the connections on the block can turn sideways, relieving some of the stress.
The block-pump assembly is entirely made of plastic, with the exception of the copper base of course. Although plastic makes such designs look cheap, Enermax tried to improve the appearance of their product by engraving a symmetric pattern on it, grooves on its sides, and added blue LED lighting beneath their company logo in the middle of the block. It does help but the block of the 120S is definitely not the best looking around. The copper base of the block however is very well made, smooth and machined down to a nearly perfect finish.
Enermax Liqtech 120X
Despite the name, not Liqmax but Liqtech is actually the best series of Enermax's AIO cooling solutions. There are two versions with different radiators, the 120X and the 240. We received the small version, the 120X, supplied in a very well designed black/red cardboard box.
The bundle of the Liqtech 120X consists of the standard items; a manual with installation instructions, mounting hardware, and a syringe with thermal compound. Enermax also supplies a 3-pin Y-splitter fan cable, which can be used to power two fans off a single header. Two 120mm fans are supplied with the Liqtech 120X, both being the same as the black range-adjustable ELC-LT120HP fan of the Liqmax 120S kit.
If this were a beauty contest, the Liqtech 120X would be the most serious contestant. Enermax definitely spent a lot of time and energy designing the 120X so as to stand out from the crowd. The radiator has grooved aluminum blocks attached to its sides, with the company logo printed on them. Anti-vibration material forms red stripes where the fans will be seated. The design of the radiator itself is very different from that of most other kits as well; instead of wavy aluminum fins between the liquid pass-through channels, this design forms single, "seamless" fins from one side to the other. It is considerably thicker as well, measuring 43mm deep, which can be a problem in some system cases.
The block-pump assembly is entirely metallic as well, with an aluminum frame and a copper base. The black aluminum top of the block forms fins, which sort of function as a small heatsink, with the company name and logo clearly visible in silver. Even the mounting supports are made out of solid aluminum, with those for installation on an Intel CPU already attached to the block. The copper base is clean, smooth and very well machined. This AIO cooler obviously is a very different design than those from Asetek and or CoolIT; Enermax however did not want to reveal their source.
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faster - Wednesday, February 12, 2014 - link
I want a closed loop system for my video card!My GTX780 is much louder than my CPU fan.
Liquid cooling was supposed to be how one obtained high performance quiet computing. Air cooling solutions should not be able to compete with a liquid cooling solution in the same environment, but it seems they do. How is that?
blanarahul - Wednesday, February 12, 2014 - link
"I want a closed loop system for my video card!"This. All the stupid OEMs want to disgruntle consumers. We already have more than enough great CPU coolers, but very few great GPU coolers. All I want is a card that is NOT pre-overclocked (but can be overclocked at my whims ;) ) and comes with a all-in-one liquid cooling solution. Is that too much to ask??
E.Fyll - Wednesday, February 12, 2014 - link
Oh, that is coming, soon. Stay tuned, should be online within a couple of weeks. :)Dribble - Wednesday, February 12, 2014 - link
True, for cpu's you don't need that big a cooler - all these lower power Intel cpu's don't pull 200W even overclocked. A big air cooler is sufficient. It'll work as well as a single 120mm fan radiator water cooler but is cheaper and more reliable.However graphics cards are another matter altogether - they pump out huge amounts of heat.
Hence either I WC my graphics card in which case I might as well get a system that can WC my cpu too, or I just stick to air cooling.
BuddhaBum44 - Wednesday, February 12, 2014 - link
You can always get the Kraken X40 and the bracket they make for 780s: https://www.nzxt.com/product/detail/138-kraken-g10...bj_murphy - Wednesday, February 12, 2014 - link
Solid review with some good information. I've been waiting for a "compendium" of sorts to link to people, explaining which closed loop coolers are the best. Thanks E. Fylladitakis, looking forward to more great articles!doggghouse - Wednesday, February 12, 2014 - link
What is a realistic load for a CPU? My 4770K has a max TDP of 84W... and I see a 3960X has a max of 130W. Are there actual CPUs that have anything above that, like 200W - 340W? If not, does it make sense to include those loads in the average thermal resistance, since these AIO coolers are going to be applied to a CPU, not to a synthetic load...?E.Fyll - Wednesday, February 12, 2014 - link
It depends on the CPU, of course. An overclocked CPU can easily surpass their max TDP rating. High thermal loads are useful for the extraction of proper thermal resistance ratings, plus they are easily reachable by modern GPUs (and GPUs are relevant, especially with AIO coolers; you'll see why soon enough). Of course, if you know the power requirements of your current CPU (if not overclocked, about 75% of its TDP), you can easily check the graph closest to it.dragosmp - Wednesday, February 12, 2014 - link
Hi,Great review, I like the methodology. It is nice to see all coolers tested with a constant load that is subject to much less randomness than a CPU power output.
I have two questions:
*is it possible to test all coolers at a certain noise level like 40dB +/-0.5dB; 7V testing is not that relevant for a cooler that is silent @10V, why would anyone silence it even further, save electricity?
*could you provide an order of magnitude of what clock speed and voltage a CPU would need to be at to achieve 340W/150W...etc. It would be useful to get our bearings vs the real world. A chart would be nice a bit like this:
.....................150W.................250W
Haswell DC....4.6GHz/1.25V......
Haswell QC....4.2GHz/1.27V......
FX83xx OC....4.1GHz/1.35V......
The reason for the last remark is that buying decisions are made also with cost in mind. One may think: I have max 30°C Tcase, 4.5GHz Haswell, what is the thermal conductivity I would need so the CPU never passes 70°C? Answer ==> review (maybe not the best cooler, maybe not the most expensive...). I have bought windows for my house like that.
E.Fyll - Wednesday, February 12, 2014 - link
40 dB(A) is not really "silent". I would rate <35 dB(A) as silent and still I can notice that in a very quiet room. 40 dB(A) is a slight humming noise, fairly quiet and most people just ignore it, yet it is easily noticeable. It is an interesting idea but that is not really possible when not all products can do at least 40 dB(A) and not practical, as the motherboard does not read the sound level, it just adjusts the voltage. 7 Volts are just high enough to ensure that (almost) every fan will start and about the same voltage as most motherboard will apply in their "quiet" mode. About the CPUs, I cannot do that as that would require me buying and testing every single CPU, which is not possible. Besides, every CPU is unique and the energy consumption also depends on several settings when overclocked, so it could easily bring misleading results. A single different setting can cause a massive change on consumption at the same exact frequency. For instance, a i7-3820 at 4.4 GHz consumes nearly 20% more energy with its voltage upped by 0.1V. It truly is a very interesting idea but a great deal of data and testing is required to create a proper database.