Closed Loop AIO Liquid Coolers: 14-way Mega Roundup Review
by E. Fylladitakis on February 12, 2014 7:00 AM ESTNZXT
NZXT is another company that recently decided to jump on the AIO cooling bandwagon and they did so a little bit furiously. Instead of releasing a wide selection of products, NZXT released only two coolers, both meant for 140mm fans alone, clearly aiming for the high-performance segments of the AIO coolers market. They supplied us with both of their AIO coolers for this review.
NZXT Kraken X40
We received the Kraken X40 in a well-designed, white box with plenty of information about the product printed on its back and sides. Inside the box, the cooler is protected by cardboard packaging and nylon bags. The bundle of the Kraken X40 comes well presented, with the mounting hardware categorized into separate nylon bags. All of the mounting hardware and brackets are black. There also is a leaflet with installation instructions and a CD with the Kraken Control software, a rather simple piece of software that can be used to control the speed of the pump, fans, and the lighting of the CPU block. A single 140mm fan with a black frame and white blades is supplied with the X40. The fan has a very wide speed range of 800 to 2000 RPM and a fluid bearing for high performance and reliability.
Aesthetically, the Kraken X40 is hardly any different from most other Asetek designs. NZXT went with the normal thickness (27mm) on a 140mm wide radiator, most likely to ensure the compatibility of the cooler with most of their cases. The radiator follows the standard design of every other Asetek-made AIO cooler to this date, with wavy aluminum heat dissipation fins soldered on to the liquid pass-through channels. Unfortunately, fin deformations and imperfections are once again common. NZXT is using black, kink resistant tubing made of hard, smooth rubber. It is noteworthy to mention that the Kraken X40 has 16" (40cm) long tubing, which is about 4" (10cm) longer than that in most other kits.
The circular block-pump assembly does look like the standard Asetek designs, such as the ones of the Corsair H90/H110 kits, yet there is more to it than first meets the eye. There are many wires coming in and out of the block; one is a 3-pin header for power, one is for the USB interface, and the third is for the connection of up to two fans. If the fans are to be controlled via NZXT's Kraken Control software, they need to be connected to the block. NZXT is confident that all of these can be powered via a single 3-pin fan header. At the top of the block, covered by a sticker that is a pain to remove, a circular ring with NZXT's logo on the side can be seen. There is not one but several LED lights beneath it, allowing full control of its lighting color via the supplied software. It is also possible to adjust the color according to the temperature. However, the pump will not light up until it receives a command from the software, so do not get concerned if there is no lighting when you first start up your system.
NZXT Kraken X60
The Kraken X60 essentially is the bigger brother of the X40. It comes supplied in a similarly designed cardboard box, just a little bit larger and with thicker packaging material inside. The bundle is virtually identical, with the same black mounting hardware and a similar manual with installation instructions. However, two 140mm fans are now supplied with the cooler, the same 140mm fans with the black frame and white blades as the one supplied with the X40.
Essentially, the Kraken X60 is both technically and visually identical to the X40, with the exception of the radiator, which is twice as long. The 280mm long radiator can now support up to four 140mm fans, with two supplied by NZXT. Other than that, it has the exact same width and thickness as the radiator of the X40, as well as the same issues with the quality of the heat dissipation fins.
The block-pump assembly is very similar to that of the X40 as well, featuring the same circular design and the same multi-color LED lighting. There are differences on the wiring though, as the assembly now requires power from a SATA connector and can be used to control up to four fans. It appears that the pump is still being powered by the 3-pin header, allowing the control of its speed by the motherboard, with the SATA connector reserved for powering the USB interface and the fans. Thermal compound has been pre-applied on the copper base of the cooler, which is machined to a nearly perfect finish.
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E.Fyll - Thursday, February 13, 2014 - link
That would be new to me; I am practically unmoved by anything, let alone someone who is trying to debate with me online.Unfortunately, you did state your point but you cannot possibly "defend it". Your point is based on your personal preferences and assumptions. I explained to you thoroughly why your assumptions are wrong and how they would lead to erroneous results. Anything based on assumptions has no basis, there is no argument that can defend it and is practically wrong. Still, you chose to cling upon your opinion. That is your choice; it does not mean that I have to endorse it.
As for the "what differentiates an AnandTech reviewer and the typical Newegg/Amazon user reviewer" comment, I...rest my case. If that is all you can see in such an article, there is absolutely nothing that I would like to say to you.
The PC Apologist - Thursday, February 13, 2014 - link
Fyll: "I am practically unmoved by anything, let alone someone who is trying to debate with me online."PCA: Being unmoved is not necessarily a good thing, it merely means you're not open-minded enough to allow for room for improvement. Also, is debating online somehow a lower standard or an inferior forum for argument? This is 2014 for Christ's sake, what would you have preferred, debating over the phone or in person? Coming from an online writer no less...
Fyll: "Unfortunately, you did state your point but you cannot possibly "defend it". Your point is based on your personal preferences and assumptions. I explained to you thoroughly why your assumptions are wrong and how they would lead to erroneous results. Anything based on assumptions has no basis, there is no argument that can defend it and is practically wrong."
PCA: What, what, and what? So one cannot possibly defend a stance that is based on personal preferences and assumptions huh? Interesting. I wonder what Michael Sandel of Harvard would say to that. And trust me, throughout this dialogue I've been way more objective and scientific than you. All you're clinging onto is a failed and lobotomized version of Logical Positivism. As for assumptions, ever heard of thought experiments and hypothetical scenarios? Jesus Christ... And don't blame me for your lack of imagination and creativity. The answers to all of your previous questions, concerning what fans to use and how to discern a good cooler from a bad one, are obvious to any true computer enthusiasts with even a minimal scientific background. Needless to say, you are not one of them.
And for the AnandTech vs. Newegg user reviewer point (in the correct context please), how can you rest your case when you've never presented it? What is your case? You can't just end it without having started it because then, we won't know where exactly you are wrong.
Listen man, I've tried to be nice and courteous, but you are really pushing it. And I hate to throw the book at you, but it's obvious you haven't read it (or any other for that matter). The following is posted under "Review Philosophies" of the AnandTech About page:
" We employ the scientific method in all of our endeavors. Ensuring reliability by repeating tests multiple times, checking results against control groups and implementing sound testing methodologies. We create the vast majority of our own test suites using both in-house and industry standard benchmarks. We also put a lot of effort into ensuring that the results published in our reviews track with the real world user experience of the products we review. In many cases the majority of the test results we generate never make their way onto the site, they're simply used by our reviewers to better understand the product being evaluated to provide you with better overall content.
Our reviews incorporate a mixture of objective and subjective based analysis, the balance varying where appropriate. We are not a site that exclusively relies on data based comparisons but also deliver honest user experience evaluations as well. Some reviews lend themselves to data driven analysis more than others (e.g. CPU review vs. smartphone review), but we always attempt to provide both in our coverage. I fundamentally believe that you need both to accurately portray any product. Numbers are great for comparative analysis, but without context they can be meaningless. Similarly, personal opinions are great to help explain what owning a product may be like, but without data to back up some claims the review lacks authority (e.g. average vs. good battery life begs to be quantified).
We are a very small team for a publication of our size. We are human. We make mistakes. We gladly welcome criticism from our readers and vendors alike. Seeking perfection doesn't mean being perfect from the start, it means being able and willing to improve when faced with evidence that you're not perfect. I feel strongly about this - negative feedback is tough to hear, but as far as I'm concerned it's free education. If there's validity in a complaint about something we've done, we will take it to heart and act upon it. We rarely ban commenters in our articles (99.9999% of banned commenters are spammers). While I would appreciate it if you are respectful to our writers when commenting, you won't be banned for expressing your feelings about something we've written - as nice or as harsh as you may be. Naturally, given the name of the site, I reserve the right to change this policy and totally ban you if you look at me funny in public."
- The PC Apologist
Sushisamurai - Thursday, February 13, 2014 - link
Bingo. As a professional working away from home, with a limited, local selection of parts, I really have to thank Anandtech's thorough review of stock, out of box configurations. Really helped in terms of eliminating what I don't want - some people just don't have the time in their life browsing complicated reviews factoring modifications. I don't mind spending $150 for a AIO cooler that I can set up, and that it works better than some, as opposed to buying something for $100 and buying other fans etc to make it perform similarly to a $150 product out of box. That extra time and hassle isn't worth it to me (and some people).That being said, rock on for the review! I only wish there was a more clear answer for corsair vs NZXT for the bigger radiators (x60 vs 110/100i). I wonder how they would perform with max fans (4 fans push and pull from the manufacturer) for noise and thermal performance at certain loads; as their thermal resistance is different, I wonder if would more fans compensate for lower noise (over all lower RPM) at certain energy loads. But I suppose that's for a more detailed review another time :)
The PC Apologist - Thursday, February 13, 2014 - link
All I hear is compromise after compromise.After having cut so many corners, what differentiates an AnandTech reviewer and the typical Newegg/Amazon user reviewer?
P.Ashton - Thursday, February 13, 2014 - link
I do not usually post comments but boy, what a load of rubbish!The PC Apologist, if I may ask, what are your qualifications? I mean, aside from typing long, beautiful and full of useless information texts. Are you an engineer or products specialist in any given way? It lacks any sense to tell you how misconceived you are, others did before me and you discarded them basing your "reason" on childish arguments. But alongside "obnoxious" and "elitist", I would definitely add "arrogant" to the list. Someone who is overqualified for this kind of job is wasting his time trying to educate you and you compare him to a "Newegg reviewer"? Good lord.
I myself am an enthusiast, I spend several thousands of pounds every year on hardware and I would never buy a cooler with the purpose of replacing the fan. If a cooler cannot do the job out of the box, that tells me a lot about whoever designed and markets it.
Regarding your future application as a reviewer, please, save us the trouble. I would very much rather read a short and cold technical text than a long essay full of bollocks. I can decide for myself if I like a cooler or not after it has been presented to me and I am here to read proper reviews, not sales ads.
Keep up the good job E.Fyll. I will be buying none of these and I look forward to your air cooler reviews. One short recommendation, if I may. You should add the C/W bar graphs after every temperature graph, not just the average C/W graph. I can calculate the C/W for the wattage that interests me but I do not believe that is true for many people.
The PC Apologist - Thursday, February 13, 2014 - link
It matters not what my qualifications are. It wouldn't matter if I'm a 12 year old school boy or a Ph.D. with published papers and years of experience working in the field; if you are basing my truth claims solely on my qualifications, you are committing the genetic fallacy.As for the Newegg reviewer comment, recall the context: "All I hear is compromise after compromise. After having cut so many corners, what differentiates an AnandTech reviewer and the typical Newegg/Amazon user reviewer?" So first, learn to read. Second, learn to read between the lines. It is a rhetorical question, intended to incite a point. If you disagree, argue your stance, don't nerd rage.
E.Fyll is "overqualified" for this job? All I see is a grunt, willing to put in work without proper thought. We all know that he's done a lot of testing and data compiling, but without an adequate understanding of the scientific process and an acceptable command of language, all his hard labor is just that, hard labor.
Spending a lot of money on hardware isn't want makes one an computer enthusiast. Sigh...
The rest of your comment is just you telling us about yourself. Nice to meet you Bob. Was it Bob?
apoe - Monday, February 17, 2014 - link
Just keep writing essays and ignore how everyone disagrees with you. LOL.landerf - Wednesday, February 12, 2014 - link
This is great, except that many people replace the fans on these coolers and would be most interested in a test using the same 120/140mm fans on all the coolers. To know which one truly is the most effective. Unfortunately this very consumer relevant test is not one I've ever seen done with CLCs. If were to do this, I'd suggest using a common radiator replacement fan like a GT and whatever the community at large considers the 140mm equivalent.Duncan Macdonald - Wednesday, February 12, 2014 - link
Non-AIO water coolers can give far better noise performance.(I use a pair of Zalman Reserator 1 V2 for silent cooling of a 4770K and a R9 290X. Not cheap or portable but VERY QUIET.)
E.Fyll - Wednesday, February 12, 2014 - link
And better thermal performance, if I may add. Cost and complexity however are on a whole different level. :)