Pros: I upgraded from Corsair's own H100i to this H115i PRO and I am not let down one bit. First of all, the ML series fans are simply AMAZING. For those that don't know, ML stands for magnetic levitation. These fans operate with virtually no friction at all, making them extremely quiet even at a high RPM. They also have a new design and look really sleek. Compared to the 120mm fans I used in the H100i, these 140mm fans produced better results at a lower RPM and noise level. The block features dynamic multicolor RGB lighting that's extremely vibrant. RGB is all the rage these days and Corsair doesn't disappoint here. The colors pop and using Corsair's newest version of their Link software, you can configure the lighting in virtually any way you like. If you want just one solid color you can do that, or you can have it pulse, fade, breathe, or whatever you can come up with. While I had issues with earlier versions of Corsair Link, the newest version is much less prone to bugs. I love the preset modes in Corsair Link. "Balanced mode" is the mode most people will use. It gives you the best performance and compromise on noise. There is a new mode called "Zero RPM Mode," which will completely turn off the fans when the CPU is under 40C (you can set this to a different value if you like). Anyone wanting an extremely quiet PC will appreciate this preset. You can also create your own custom fan curve as well, which is always the route I take. Corsair has changed the tubing and it not only looks better than the older tubing, but it's a lot more flexible. This is very important because the older tubing would fight you when you tried to mount the RAD the way you wanted it, which sometimes forced people to turn the block upside down. Nobody wants an upside down logo on the block... Now you don't have to worry about that. Performance is simply fantastic using the giant 315mm x 143mm x 29 mm RAD that's included. I was getting around 65c under load with my 4790K OC'ed to 4.6Ghz running at 1.3v when I was using the H100i. After changing to the H115i PRO, I'm at 58C under load at the same settings. That's a pretty substantial difference, not to mention it's a lot quieter when the CPU is under load. If I push the fans harder, I can get the temp to reduce by a few more degrees, but it's perfectly fine running at this temp. The H115i PRO supports a TON of different sockets out of the box, including the somewhat older LGA 1150. Like me, a lot of other people are still using this socket. On AMD's side, as long as you have an AM2 socket or newer, you'll be good to go. The unit is incredibly easy to install, especially if your case has a cut-out to access the back of the CPU socket without removing the motherboard. On most sockets, the tool-free mounting system allows for quick and painless installations. The fact that Corsair was able to make a closed-loop liquid cooler that works so well, looks great, and is easy to install really is an engineering marvel.

Cons: Many cases won't support a RAD this large as it requires two 140mm mounts side by side. The block needs a large USB connector in addition to a power connector that goes to the CPU FAN port. These cables coming off the block don't make for a super clean look, which is a shame considering how beautiful the block is otherwise. Some people might not like the fact that you need yet more software running in the background at all times if you want your custom lighting and fan speed settings to work.

Overall Review: I really had to nitpick to find any flaws with this cooler. When I think back to the day I bought my first Corsair H50 cooler, it's amazing to me how far they've come with these closed-loop coolers. They work so well and look incredible. I can't recommend this unit enough. If you want great cooling and are very concerned about the noise levels, look no further than the H115i PRO. If you want even better cooling and noise isn't as much of an issue, check out it's big brother the H150 PRO instead.

Pros: Simple and effective AIO water cooling solution. RGB lights, if you are into that are nice, well positioned, and not too intense. Cooling capacity for your CPU is top notch and 140mm fans tend to be more subtle to the ear than an equivalent 120mm fan. Handles my i7-5820k overclocked to 4ghz with ease. New included updated magnetic levitation bearing fans are a huge upgrade over previous models. The LED in the pump/block base can change display colors based on a temperature profile, I've always found this little feature to be neat.

Cons: There is so little to possibly complain about, the screws for the fans are a tad long as may be hitting the fins crushing the corners a bit. This should effect performance however as they are not in line with the majority of air passage. This has been an issue (non issue) with every AIO cooler I've used, just something worth the note.

Overall Review: First I tried just the included fans, not bad and I was glad to see the unit fit inside the top of my case. Unfortunately for me I barely get to see the lighting effects, left to mostly what is displayed on top of the block itself. The unit slightly out performs my H100i with both slightly better temps given default configuration and slightly lower noise levels. I moved onto switch the fans out with some much higher speed and cfm fans in a push/pull configuration, this dropped temps down a bit under stress loads but I doubt it would be worth it to most users considering the excess noise and dust. The noise level more than doubled and the peak temps only came down by 4-5 degrees, this isn't giving much more room for overclocking. Switched back and left the new fancy fans installed, of which I may add a second pair to combat the radiator restriction. Corsairs software is getting better, it has always done the job just a bit awkward to jump into. Overall an excellent cooler, about the best you can buy before going all in with a custom complex and expensive loop. Very pleased and disappointed I didn't spend the extra money on a 280mm system before.

Pros: This cooler is pretty much silent and looks amazing in my computer which is completely set up with the RGB theme including mouse and keyboard. This is my first time using liquid cooling and I am amazed at the differece and now want to overclock much more than I have ever done on my build. Temps are running room temp at idle (around 23c) and I haven’t stressed the CPU enough to get over 40c but have done played some games and I’m extremely happy with this CPU cooler.

Cons: Installing the unit caused me a bit of frustration and I had to go over the instructions a few times and also check out some videos online but this was the first liquid cooled unit I’ve ever installed. I couldn’t get it to fit my case at first but was trying to place it in an awkward position until I changed some of my other cabling around that was blocking the installation of the until. Probably took me longer than it should have to get it installed but I wanted to make sure everything was perfect.

Overall Review: I love that its all coming together in my PC build and everything looks so great together when I am matching up Corsair products. This CPU cooler is just too awesome and I am very happy with it in my gaming system. I have been buying Corsair memory for decades and if I didn’t build my own PCs I would definitely be looking at the Corsair One for a gaming rig. Thanks Corsair for this wonderful product!

Pros: Easy to install for a liquid cooler. (I've built my own liquid coolers with reservoirs, cooling blocks etc and by far easier) Obviously the more surface area you can get on the radiator the better for cooling especially her in Phoenix, AZ where we keep our homes around 80 degrees F. Really quiet. Having computer under desk, I cannot hear anything. RGB is cool but personally I like to keep the lights off to conserve as much energy as possible. Solid copper core on CPU perfect to conduct the most heat away from unit. Thermal paste perfectly applied to connector no need for additional paste. Just Tighten and go.

Cons: Tubing is a bit tricky to install on some cases since you cannot replace or disconnect them to fit through any holes or slots. (Note: I think all the Corsair cases work with these units, each carbide and military style case I've tried fits perfectly)

Overall Review: The spacers for the various motherboards and CPU's can be a bit tricky for some users. Just make sure the cooling block is touching the CPU properly before tightening the unit down. You may have to take the motherboard out of the case to attach the backing plate. Don't be lazy and make sure you add all the correct spacers. Also make sure the backing plate is not touching any metal electronic components when tightening down. I've used a piece of non-conductive plastic to ensure no shorts occurred later on one build using an MSI motherboard. I'm not entirely sure why, but whenever using a water cooler, gaming seems smoother. Might be because electronics work more efficiently when cooler, but I haven't done any scientific studies on the phenomenon.

Pros: - Keeps my i7 5960X nice and cool at stock voltages - Whisper silent, barely know it's running - LED lighting effects look cool and are easily tunable - Installation is pretty straightforward if you've ever installed a liquid cooling system before

Cons: - None

Pros: * 280mm radiator * Magnetic levitation fans * Braided sleeved tubing * Flexible angle connectors * Copper based cold plate

Cons: * Tubing can is on the shorter side * Fragile connectors * Pre-applied thermal paste * 280mm mounting holes do not lineup with most cases * fan screws are too long, but work

Overall Review: This is a really good cooler, one of the better ones I have used ad tested. I generally use a triple 120 radiator and I found this cooler to cool similar if not better than my triple setup. This has dropped my temperatures by almost 10 degrees compared to my triple setup, so in my book that's a great win. Installation is a breeze when connecting to the processor and motherboard, my only caveat was trying to install the backing plate while the motherboard was installed in the case. Even with an access panel i had to remove the motherboard because the backing plate was a bit large and hit the sides of the motherboard tray. Installing the radiator I found that the screw holes did not line up with all the 280mm screw holes in my case, I did manage to get it installed but its worth mentioning as not everyone will have the same luck. I also found the screws were a tad too long and would hit the fins of the radiator, a few discreetly placed washers and i was able to mount everything without any issues or causing any damage to the radiator fins. There is pre-applied thermal compound on the copper cold plate, this may be good for those who are ok with factory thermal paste, but based on past experience I have always had better luck and cooler temps when using something other than factory thermal grease. For this install I switched to MX4 and couldn't be happier. Temps while under 100% stress load was actually almost 10 degrees cooler than my custom triple radiator water loop, but in that regard it was a cpu and graphics card loop so that's a given it would be slightly higher temp. Once installed and everything mounted you can go online and download corsair link, this software is used to control the customization of the lighting and monitor pump status as well as temperatures and raise or lower fan speeds. I found the software to be good, sometimes a bit buggy. but overall it worked great. In all and all, I would recommend this to others and will be buying another for my next build

Pros: - Magnetic levitation PWM fans. These guys are pretty dang quiet even at full speed. When they are running at normal speed, it is almost as if they are silent. - Magnetic levitation also means the fans will probably last a little longer as there is less metal-on-metal to be worn down for the bearing. - Support for Zero RPM mode, but CORSAIR LINK is a requirement. - Fancy RGB lighting is nice. - Super easy to mount, as easy as my H110i. Supports all different types of sockets. - Copper heatsink base and aluminum fans. Copper is better at heat transfer and aluminum is better at heat dissipation.

Cons: - No other mounting options. You can't fit 120mm fans. - This also means if you have a case with only 2x120mm fan slot, you can't mount these either. - In addition you can't change fan position. For example if you only wanted one fan in the middle or if you wanted to shift the fans slightly down or up on the radiator.

Overall Review: I've never had a problem with these single cpu water cooling solutions for Corsair. I've used an H110i for a few years now without any hiccups. The design is great and the cooling is superb. Installation is easier than Intel's stock fan. The pre-applied thermal paste is honestly 'good-enough', but if you really want to use your own, you can wipe off the pre-applied thermal paste and use your own.

Pros: First impressions count: Unboxing this, gives a clear clue, enclosed is something really special, packaged like eggs with two fans (precious cargo) individually boxed nestling in the center topped with a Quick Start Guide. Examining the bits & pieces, there’s little doubt >>> this is a substantial quality liquid CPU cooler. In fact, what really counts is amazing cooling performance under heavy loads. First & foremost, this heat dissipation system is a top notch >>> efficient CPU cooler >> task accomplished admirably/quietly. The H115i PRO is extraordinarily attractive & programmable (fine-tune RGB lighting, fan & pump speeds). Zero RPM cooling profile using CORSAIR LINK software permits fans to work autonomously; stop entirely at low temperatures, temporarily, abating noise. Two (2) 140mm ML Series “magnetic levitation” PWM fans >>> magnetic bearing technology provide lower noise, higher performance, and a longer lifespan.” Frankly, I didn’t get the gist of the Corsair’s phrase, powered by magnetic levitation; kind of sounds like some sort of CES Las Vegas magician prestidigitation. The product page wasn’t helpful – so – I searched for an answer. YouTube to a moderate degree gave me an inkling: 153,000+ folks were equally curious, viewing the 43 second video >>> CORSAIR ML Series Fans - Powered By Magnetic Levitation. It looks like an there’s an internal holding /centering device which retracts, allowing the fan to spin suspend in a magnetic field. Look at it, draw your own conclusions. Compatibility >>> Intel LGA 1150, 1151, 1155, 1156, 1366, 2011, 2011-3 and 2066 as well as AMD AM2, AM3, AM4, FM1, and FM2. Rationalize this purchase as cheap down-time, CPU replacement insurance; I’d describe it, an intelligent investment.

Cons: “Powered by magnetic levitation” seems disingenuous, magnetic levitation is motionless. If the fan were truly suspended in a magnetic field the slightest imbalance would result in a wobble. I’ve looked at the aforementioned video numerous times & examined the fan; retainers hold it in place; it needs to be dissected to be fully understood.

Overall Review: Contemplating buying a new PC case? The new breed of components has illumination enhancements, i.e. this cooler, motherboards, memory and so forth. Envision, showcasing these, buy a case with a transparent side panel. This device is highly software dependent, judging from experience, the manufacturer is very conscientious updating their software. Furthermore, I can attest to Corsair product reliability and functionality. You shouldn’t need it, but, if you do, it’s nice knowing included is a respectable warrant, parts & labor two years. Fan/passive heat exchange devices are cheaper and easier to install; why you do I need a Liquid CPU Cooler? You don’t, if you're not an enthusiast with needs that go beyond an off the shelf prepackaged PCs. Semiconductor and electronic parts failure rate increase when exposed to excess heat. PCs are metal boxes with many heat generating components in close proximity, case fans attempt to keep pace – nevertheless - intensified ambient temperature from over-clocking, graphics, power supply, memory put an increased burden on overtaxed CPU heat sink/fan, amplified, under heavy load >>> a liquid cooler “selectively” can keep an expensive CPU cooler & quieter than a traditional fan/passive heat exchange devices. H150i PRO is an enhanced version of H110i with new fan technology, without a substantial price increase. I loved its predecessor, likely the H150i PRO will follow suit. Whether or not the newly added magnetic levitation fans will be its Achilles' heel (weakness in spite of overall strength), only time will tell.