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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Dustin Sklavos - Wednesday, February 12, 2014 - link
Good lord.If I'd known my successor would produce results this thorough I'd've stepped aside a long time ago.
Really well done piece of work.
E.Fyll - Wednesday, February 12, 2014 - link
Thank you for the praise Dustin, yet I still stand unworthy of it. :)Dustin Sklavos - Wednesday, February 12, 2014 - link
I'm enjoying your work tremendously. Now that I'm at Corsair I'm glad we have someone we can send case/cooling/PSU hardware to that meets and beats the AnandTech standard.creed3020 - Wednesday, February 12, 2014 - link
Yeah Dustin....I have seriously enjoyed your labors here at AT and do miss them. Your successor has changed the paradigm so much that it's hard to compare, but it's a awesome reboot to this area of reviews here at AT.I, however, have to agree with many other commenters that a secondary dataset produced with the same 120mm/140mm fans does have it's merit as it will provide an objective evaluation of the radiator and pumps. This is one area where I am really curious to see quality differences in the products. I am fully aware that each OEM is very careful in their selection of a fan which matches their product. This is not done by lottery, that much is clear to me. The OEM behind the Silverstone/Enermax product intrigues me, as I am a fan of Silverstone products and use their cases exclusively for all of my desktops, gaming PCs, and HTPCs. The Tundra's seems like they are ripe for a revision!
BigLeagueJammer - Wednesday, February 12, 2014 - link
Under Noise Level Reference Values, your first one of <35dB(A) being "Virtually inaudible" doesn't match up with most sources I've seen. Most rate that as "very quiet" and say the limit of human hearing as 10 db(A). If other sources say things like a ticking watch is around 20 db(A) which in a quiet room is easy to hear, then 35 seems too high for your qualification of "virtually inaudible".E.Fyll - Wednesday, February 12, 2014 - link
True, I am afraid that the lot of "copy/paste-ing" online has produced a lot of bad information going around. Some are works of fiction, some are misinterpretations of confused people, some...I don't even want to know.So, copying my answer from above:
"Sub-35 dB(A) levels are generally impossible to notice by a human ear. Sub-30 dB(A) levels are next to impossible to record with anything less than science lab-grade equipment. There is no handheld or desktop dB(A) meter that can perform such readings. If you have seen reviews stating sub-30 dB(A) levels, make sure to check their methodology (given that there is any). Either the meter cannot read lower than 30 dB(A) (and/or will display a bogus reading, as most cheap Chinese meters do) and the review is a fictional text or their methodology is based on dB readings, not dB(A) readings, which is useless to a consumer."
I think it will suffice for me to say that you cannot possibly hear what an instrument designed for this specific purpose cannot even record. In theory, the human hearing threshold is 1 dB(A); in practice however, that is true only for specific frequencies. The background noise of a typical room is almost always above 32-33dB(A).
Jon-R - Wednesday, February 12, 2014 - link
What is your opinion on the tests done over at SilentPCReview? They test using lab-grade equipment. A rundown can be found here: http://www.silentpcreview.com/article875-page2.htm...They use reference fans which measure around 13dBA at their slowest fan speeds, and they don't think highly of AIO water-cooling at all, as none of the tested ones have come close to the best air-coolers when it comes to quiet cooling.
E.Fyll - Wednesday, February 12, 2014 - link
From what I can see, they are using a highly sensitive microphone and a computer's sound card to record the results, connected through an amplifier. Although the equipment is very good, this is not "lab grade equipment" but just a customized setup. A very good setup nonetheless, including an anechoic chamber. They have a microphone with a self-noise of 8 dB, which measures 11 dB(A) inside the aforementioned anechoic chamber.It will suffice to say that their results are just in no way comparable to mine. Actually, as noise level measurements are environment-specific, you should only compare the results of a same setup, never in-between different setups. Unless they are all science labs with multiple ISO certifications, of course. Given that my room floor noise level is over 30 dB(A) and they are using a sub-12 dB(A) anechoic chamber, I believe that I do not have to stress how different the results out of these two setups are.
As far as equipment goes, for example, this is a cheap lab grade sound analyzer and still costs 5 times more than the whole setup that you showed me, microphones and secondary equipment aside:
http://www.nti-audio.com/en/products/flexus-fx100....
Jon-R - Wednesday, February 12, 2014 - link
But you're not saying that their measurements are inaccurate, only that they've got a significantly lower noise-floor than what you're using? So it boils down to the difference between what is considered silent? Because 30dBA is louder than their reference fan it its loudest setting, and far beyond what they consider acceptable. Just as a reference, they measured 43 dBA for the Silverstonde TD03 at 12v, and 30 dBA at 7v.E.Fyll - Wednesday, February 12, 2014 - link
"Inaccurate" is a harsh word when it comes to sound pressure level measurements. Although I would not hesitate to use this word for most other types of tests, there are far too many variables at stake here. I believe that their setup may be better than mine. I am just using a good handheld sound level meter, with the product positioned in the middle of a standard room.I would simply stick with "different".
Sound levels are additive. If you have a noise source of 20 dB(A) and added another source of 20 dB(A), the room noise would not be 20 dB(A) but 23 dB(A). A third source would make it 24.8 dB(A) and so on. So, a fan that would measure 18 dB(A) inside an 12 dB(A) anechoic chamber, will still add to the 30.4 dB(A) floor noise of my room. The difference is the magnitude, as the scale is logarithmic. As you said, the TD03 added about 18 dB(A) and 30 dB(A) to their setup, when it adds 8.3 dB(A) and 17.7 dB(A) to mine, because of the higher background noise. These differences are in no way comparable to each other; that is only possible when the scale is linear. The further you move up the decibel scale, the largest the increase of SPL becomes per single decibel.