Customer Ratings & Reviews

Would be 5 stars, but the first one I got was a dud, pump wouldn’t work properly. Got a replacement and works like a charm!

Took my computer from running thermal throttling to running a nice cool 33c while gaming amazing!!

Perfect for new build!! It works perfect for cooling cpu when overclocking

I bought this for my i7 9700k and it’s working as expected. The first one I bought had a few dents in the rad so I returned it and got another sent my way. When I got my 2nd one yet again more dents but not as bad as the first time a lot less noticeable! So I went with it and installed it and it’s been running great since. It’s the only component in my pc I can hear so the pumps kinda loud but it’s not terrible.

Very pleased. Only con is in my build with a P400A. The rad and fans have to be mounted on the front of the case so when looking into the case you see the back of the fans and the LEDs are blinding. Instructions could have been better. Had to watch a video to make sense of the wiring.

It looks fantastic and fits well in my build, however when I unboxed the product I noticed some slight bent pieces on the radiator. Nothing that would effect the performance of the cooler, but still frustrating when you pay good money for a quality product and they send a product with blemishes.

I build computer as a hobby and Cotsair never fails and its a great quality.

This is my 3rd H115I from Corsair and after running the AOI radiator for less then a hour it shuts off and does not reboot and or respond to anything

When designing a cooling system, most companies these days optimize for low noise. Corsair optimized for performance, which is great! It does a fantastic job at keeping my i7 9700k cool - in fact, it is quiet aggressive at that. My annoyance is that for the money Corsair is asking, you get super thin wiring that kinks immediately, connectors with super sharp edges, and the fan shrouds aren't even really polished. Shoot, I'll go out on a limb - I believe Delta uses a higher quality finish on the fans that go in Dell servers. Corsair still needs to work on iCue, too. It works great - when it works. EVERY TIME I go into iCue for the first time on a boot, I have to close it and reopen it to see my devices. Ahh. That high quality software I paid so much for.

Functionally this is an awesome AIO cooler. Aesthetically is amazing. All kinds of lighting effects. Very easy to install, pump comes with thermal paste already applied. Does exactly what you'd expect it to do. iCue software can be buggy at times, but does the job. This is the second one of these I bought, so that's how highly I think of this product.

Ryzen 7 2700x Before installing this, my temps barely ever got as low as 38 C on idle and would reach 65-70 C while gaming. After the install, it idles around 29-30 C and playing the same games it's only hitting 40 C! I have six 120mm intake fans with a very conservative fan curve, and I set the ml140s about the same. Now the only noise I really hear is is coming from the GPU. The reason for 4 stars is due to A) the power and rbg cables coming off the pump are an eyesore. They need to be sleeved like the coolant lines. Plus they are very long and make cable management a pain, especially if you have other RBG fans set up. B) Best Buy doesn't offer any kind of extended replacement plan for this product so if ANY part fails (fans, pump, coolant fittings leak) you have to contact the manufacturer. Install was not too difficult, just be sure have a plan on how you will route all the cables before you start tightening everything down.

Few months of owning this. Had it in 2 different cases. Too mounted and front mounted. My temps stay cooler with front mount but even still under full load with a small overclock on my i9 kept this thing under 40 degrees. Never broke 40... Under full load... I also have 4 other 140mm fans blowing in and our of the case... And my office I keep cold, about 65 degrees year round. But either way, it performs. Would recommend. Incredibly easy to install. It's literally set and forget. No jerking around with fluid, just put the fans in the rad in the direction you want, they are good for push and pull settings. Made no difference in cooling ability on my setup. Set the LED settings and forget it. I had it installed in 20 minutes.

I have had this product since last week. The AIO itself works perfectly along with all the RGB effects. The problem is the controlling software they expect you to use. The problems vary widely depending on your system and who you are when using ICUE. Anything from System hang-ups to BSOD has been reported. So let's talk about the issues specific to me Brand New Build, Brand new components. Everything would work flawlessly up until I would attempt to download ICUE. My system all of a sudden starts to lock up and [persistent restart and shut down issues occur. I installed ICUE 5 times, I had to reinstall windows on my machine all 5 times. At one point one of the system hang-ups causes me to force shut down my machine, which in turn cause Windows to become unbeatable, and wiped my whole move and tv show library I had. Something around 6TB of Data gone just like that. I have never experience anything like what I experience when attempting to use or download ICUE. I have gone software by software to ensure it is infact ICUE and at one point my system started to hang before I even installed it. All I did was download the MSI. Sadly you need the software in order to take the fan mode out of Quiet Mode and at least into a balanced mood. I actually don't care about changing the LED pattern as I am fine with the original pattern. I do need to change the fan speeds and can't do so without the software. It makes no sense why the AIO is shipped on Quiet mode and note at least balanced considering most people would be using this in a balanced way. My system has consistently crashed because of it and while I love the AIO the frustration that came with it and its software were not worth the 170$ asking price. All i am asking from Corsair is for them to actually care about their software development and QA process and make sure they are actually addressing bugs in their software. Because even after all this time their forum is filled with people experiencing a wide range of issues. That list now includes me.

Pros: Very good looking, cools very effectively, and is almost silent in operation. Very customizable. Easy to install. Cons: the fan mounting holes in the radiator were not drilled accurately. Could only get 3 out of 4 mounting screws to line up in mounting the fans to the radiator. Still works fine. My first corsair cooler ran over 9 years trouble free.

I'm a big customer of Corsair, for better or worse (most of the time for better). I've been wary of water cooling for a while, but these seemed like fairly solid products, so I finally pulled the trigger. It does a great job of keeping temps down, and the lighting options withing iCUE are very nice. Hopefully the pump lasts.

Looks great while cooling pretty good also. I have an overclocked r7 1800X at 4.1ghz and this keeps it cooled to 38C~41C at idle. Under load, it does get a little hot around ~70C, but still within spec. The lights are configurable and the fans are very quiet. Just wish there was as cleaner way to use the USB port on the CPU block. That cable is always unsightly.

This is a great AIO, keeps my Ryzen 3900X very cool. My CPU never even gets to 70c under heavy load, stays in the 50s and 60s when gaming. It's very quiet, and the iCue software was easy to install and navigate. I would recommend the H115i strongly.

This liquid cooler has done great for me. It was easy to install and it has cooled my CPU greatly I run about 10 degrees cooler on idle and 15-20 degrees cooler underload compared to just air cooling. And I was worried about the cooling that would make it to my gpu and but my gpu has even been cooler than before because the air going through the radiator is straight focused on it. And the CPU air cooler isn't just making the air circulate in the case instead all the hot air rises and escapes.

Love this with a RGB Magnetic Levitation Fan which is very quite. Easy setup and goes perfect with all my other RGB peripherals.

I paired this with my i9 9900k overclocked at 5ghz with a -3 offset ratio. Temps ranged from 29°c to 71°c depending on how much stress I was feeding my card (benchmarks,stress tests, ultra HD gaming). Mounting the fans to the radiator is a little tight because the screws are painted black. (feels like it might strip threads but it won't) The I cue software comes with multiple preset fan speed options and an extreme mode which sets the fans up to 2000rpm . Overall good aio I would recommend to anyone getting a high end CPU.