Closed Loop AIO Liquid Coolers: 14-way Mega Roundup Review
by E. Fylladitakis on February 12, 2014 7:00 AM ESTCorsair
When we mentioned the word's "liquid coolers" and "roundup" to Corsair, they got a bit overexcited and shipped us five of their AIO coolers. For some reason, Corsair is extremely interested in AIO liquid coolers, which is also reflected by the fact that they are the only company that offers nine such products at this point in time, while most manufacturers are currently limited to just two or three coolers.
Corsair H75
Despite its "small" number, the H75 actually is one of Corsair's most recent designs. We received it supplied in a serious looking, black cardboard box with a blue visual theme. Inside the box, the cooler is protected by cardboard packaging.
Corsair kept the bundle of the H75 down to the very basics: a leaflet with installation instructions and the hardware required for the mounting of the cooler. The bundle is well presented though, with each type of screws/nuts inside a separate nylon bag. Two 120mm fans with grey wide blades are also included in the packaging. The fans have an operating range between 800 and 2000 RPM, which is not very high for wide-bladed 120mm fans.
The Corsair H75 is not a work of art but it does stand out visually. It features a rather small radiator that is only 120mm wide and 25mm deep, which offers no more heat dissipation surface than the radiator of the ultra-cheap Seidon 120V. Even though the radiator is of the same design, this time the aluminum fins are virtually free of imperfections, with very few slight deformations visible. The small size of the radiator gives the H75 an advantage in tight spaces but will certainly have an impact on its overall performance. Corsair also went with kink-resistant, smooth black rubber tubing of normal width, rather than the corrugated tubing many other manufacturers are using.
The block-pump assembly is round, with a silver ring on top and the company logo painted right in the middle of the cap. It also comes with the retention bracket for Intel CPUs preinstalled. The assembly is held together by no less than 20 screws, 12 for the plastic frames and 8 for the copper base. Thermal compound has been applied on the base from the factory. After our testing, we cleaned the base of the cooler, revealing a well-machined and polished surface.
Corsair H105
Announced at this year's CES, the Hydro H105 is Corsair's most recent product. It comes in a large cardboard box similar to that of the H75, yet with a red colored theme, which is the signature of Corsair's "extreme performance" products. The bundle of the H105 is almost identical to that of the H75 as well. Inside the box, we find a leaflet with the installation instructions and the necessary mounting hardware categorized inside nylon bags. However, we also found two colored rings for the CPU block. Finally, even though the wide grey bladed fans are visually similar to those included with the H75, they actually are not similar at all. The SP120L fans supplied with the H105 are much more powerful, with an operational range of 800 to 2700 RPM.
Even though the H105 looks like an oversized version of the H75, there is more to it than first meets the eye. To begin with, the radiator is not only twice as long as that of the H75 but nearly 40% thicker as well, increasing the effective heat dissipation area by well over 150%. Some minor deformations of the aluminum fins are visible this time as well; apparently, the making of such radiators is not an easy process. Although the 120mm width of the radiator makes the H105 compatible with more cases and systems, the length could become a problem, so be especially careful with that.
Similar to the H75, the block-pump assembly is round, with a silver ring on top. The silver ring however is removable and replaceable with either a red or blue ring, now included in the packaging. In addition, the company logo is not painted; on the contrary, it has been left unpainted on purpose and a white LED has been placed beneath it. The bracket for installation on Intel CPUs is once again preinstalled and the cooler has thermal compound applied on its base from the factory floor. Once again, the copper base is well machined and polished, free of imperfections.
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E.Fyll - Wednesday, February 12, 2014 - link
It would not; even pure distilled water becomes conductive once it comes in contact with dust. None of these coolers are using pure distilled water anyway, all are using a mixture, which is conductive. It has lower conductivity than mineral water, yet it is conductive. The higher the portion of the additive over the distilled water, the more conductive the solution becomes. The actual level of conductivity also depends on the additive, some are more conductive than others. However, it should suffice to say that the least conductive additive at the lowest possible concentration would still be extremely dangerous to electronics.I will summarize: If it leaks, you are doomed.
Dustin Sklavos - Wednesday, February 12, 2014 - link
"If it leaks, you are doomed" is a little alarmist. It depends on where the product leaks and how large the leak is. The cooler itself certainly isn't usable anymore if it's leaking, but we get hardware in from time to time for leak damage that actually works perfectly fine (Corsair warrants your hardware against cooler leaks).E.Fyll - Wednesday, February 12, 2014 - link
Yes, I possibly over-exaggerated there. What I wanted to stress is that the liquid is definitely conductive, not that it will cause permanent damage 100% of the time. There is a high chance that the hardware will be damaged but that is definitely not always the case. I myself had a serious (nearly 1/4 liter) leak with a custom-made setup and the system was just fine once it was dry again.jrs77 - Wednesday, February 12, 2014 - link
Enermax and Silverstone use quiet possibly Swiftech as a supplier for their AIO-blocks.And btw, you should've really integrated the Swiftech H220 into your roundup.
E.Fyll - Wednesday, February 12, 2014 - link
I know. I actually tried to acquire all AIO coolers in existence, including Intel's, Thermaltake's and others. Not everyone is happy to cooperate and/or willing/able to supply samples at a give time, for whatever reason.toyotabedzrock - Wednesday, February 12, 2014 - link
We need a roundup of fans. I have bought many expensive fans that turned out to be less than advertised and failed quickly when used in certain orientations. Even had blades break.E.Fyll - Wednesday, February 12, 2014 - link
That is going to happen, eventually. I need proper equipment to properly test fans. Until I can acquire it, I will not perform a half-assed job.HisDivineOrder - Wednesday, February 12, 2014 - link
It's reprehensible that you guys are not reviewing the Swiftech option that allows you to use the closed AIO part or switch to a more open config if you like, too.If you say, "That's because it's not on the market now!" I'll say it's because of Asetek trying to basically own the market and are using litigation to destroy competition. Was it any wonder that when the Swiftech was on the market, we had Corsair and NZXT AIO's all dropping down to sub-$100 for even their highest of the high end? The value you got for that $130-140 was so outstanding, no one would touch a single one of these coolers.
So to my eye, I don't see why you'd bother reviewing such subpar products that are at ludicrous pricing and reward Asetek and their twin from another mother for not bothering to compete.
Not going to reward patent trolls.
E.Fyll - Wednesday, February 12, 2014 - link
Copy-paste from above:"I know. I actually tried to acquire all AIO coolers in existence, including Intel's, Thermaltake's and others. Not everyone is happy to cooperate and/or willing/able to supply samples at a give time, for whatever reason."
I cannot test what I cannot have access to. I would love to test Swiftech's products but the company needs to be willing to ship me samples first.
Dustin Sklavos - Wednesday, February 12, 2014 - link
"Reprehensible" is an awfully strong word, isn't it? There's a lot of logistics that go into just trying to put together a roundup like this, and respectfully, you don't have the full picture of Asetek's patent or what's going on in the AIO market.