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Customer Ratings & Reviews

Your price for this item is $169.99

Customer reviews

Rating 4.6 out of 5 stars with 315 reviews

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  • Value

    Rating 4.4 out of 5 stars

  • Quality

    Rating 4.6 out of 5 stars

  • Ease of Use

    Rating 4.5 out of 5 stars

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91%would recommend to a friend

Customers are saying

Customers love the Hydro Series H115i RGB Platinum's excellent cooling performance and vibrant RGB lighting. Many appreciate its quiet operation and ease of installation, finding the setup process straightforward. While some found the size of the radiator to be a limiting factor and others felt the price was high, the positive feedback on cooling and aesthetics outweighs these concerns for most users.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 1 Showing 1-20 of 315 reviews
  • Pros mentioned:
    Cooling, Installation, Noise level

    Rated 5 out of 5 stars

    Cool & Quiet

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I installed this cooler on an i7 9700K processor with a base clock of 3.6gz. I run it on Turbo at 4.9gz, so not really overclocked, but still pushing it somewhat. When the CPU is under the gun, usually Call of Duty - Modern Warfare 2019, it stays at a reasonably cool 63C. I have the RGB lighting set to turn red if it ever gets to 70C and I've never seen it red yet. I read several technical reviews before I bought this unit and they varied somewhat in their perspectives. For me, this unit is very quiet (fans set on quiet and cooler set on balanced) and keeps the CPU very cool at 63C. It's true their is a lot of wiring (for the RGB and the USB connection to use the RGB Fusion software) but they can easily be managed, even for a first-time builder like myself. Installation was very easy, the RGB looks very nice and is highly programable and I really like the idea of setting and 'emergency color' if cooling becomes an issue. If you have a few extra dollars to spend on RGB, and you like that idea, I would recommend this unit. It keeps my processor cool and looks good doing it!

    I would recommend this to a friend
  • Pros mentioned:
    Cooling

    Rated 4 out of 5 stars

    Performance is Great! One trick for LGA 1200 :/

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    First of all the performance of this AIO is excellent. I have it on the new Intel i5 10600K and I've put it to the test. Keeps the CPU nice and cool now matter what. Ran games and CPU intensive crypto mining algorithms at the same time for hours, and the CPU temp never got high and fan speeds never got over 60%. Now, I mounted this in a Corsair case and my original intention was to go with a top mount; however, my Mobo's heat sink at the top was too big so I went with a front mount. The biggest thing to note is if you are going to mount this on an LGA 1200 socket (which Corsair says you can), you may have to actually cut the supplied screws a little shorter. The supplied screws were all too long to pull the brackets together tightly. The fix was a Dremel and about 2 minutes spent cutting the screws shorter. The only reason for the ding on one star is that if Corsair says the included hardware works with the LGA 1200, then it should. However, I would buy again, and if you have other iCUE RGB hardware, it's a no-brainer.

    I would recommend this to a friend
  • Pros mentioned:
    Cooling, Noise level, Rgb lighting

    Rated 5 out of 5 stars

    Loving it so far

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    So i just got this and put it in my rig and instantly I noticed cooler temps and not loud fans. I'm using a ryzen 5 1600 and at idle I'm sitting at 30c° before I was at 35 to 40 c° and when gaming I'm sitting in the mid 30s never going above 37 ° and before I'd get up in the 50s . Rgb is just a plus

    I would recommend this to a friend
  • Pros mentioned:
    Cooling, Rgb lighting

    Rated 5 out of 5 stars

    Another excellet Corsair Product!

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I'm using the H115i to keep my 9700k cool under pressure. It doesnt disappoint! 50c to 60c even moderately overclocked. Fans and RGB are controllable through iCue software. Easy to go from mild to wild with a click. The radiator being a 360 is quite large, paired with two 140mm fans it moves alot of water and air. Just be sure to check your case for fitment. Im using a Fractal Design Meshify C and the rad fits snuggly in the front with a push configuration. Highy recommended as are all Corsair products, their customer service is second to none!

    I would recommend this to a friend
  • Pros mentioned:
    Cooling, Installation

    Rated 4 out of 5 stars

    Nice cooler

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Works very well but the LEDs are not very bright and the RGB pumphead wouldn’t work with smart power supply. Other than those 2 minor things it does and excellent job with my i9 9900k. The Icue software works well with this product. This unit installs East compared to some other radiators I’ve installed.

    I would recommend this to a friend
  • Pros mentioned:
    Cooling

    Rated 5 out of 5 stars

    Love it

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    Posted . Owned for 4 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Works flawless. I would think this is one of the better choices I made when building my PC. I was thinking of running tubing and warmer cooling but decided to buy this instead. I'm glad I did. Works great.

    I would recommend this to a friend
  • Pros mentioned:
    Cooling

    Rated 5 out of 5 stars

    Great rgb and great performance

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Before buying this I was having some heat issues with the cooler my cpu came with. It was a fan and heat sink and it would not tighten down good and overall caused bad cpu temps and made my pc crash. I ran to my local best buy seen this knew nothing about it but after looking up some reviews decided to get it. Once I got it it was too big so I had to mod my case a little. Just make sure you look up your case specs before buying one. Anyways, once installed and in the corsair app having everything set to extreme fan settings I went from 103 Celsius (stock cpu fan) down to a max of 76 celcius. I have a intel 9700k over clocked to 5ghz. On gaming it never exceeds 68 celcius. Very happy with this product just wish they made them for my 2080 ti. I also used corsair extreme thermal paste they had from best buy as well.

    I would recommend this to a friend
  • Pros mentioned:
    Cooling, Ease of use

    Rated 5 out of 5 stars

    Amazing AIO

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is a great AIO and simple to set up. Getting some awesome temps and looks pretty sleek if you ask me. I have compact case btw.

    I would recommend this to a friend
  • Pros mentioned:
    Cooling, Noise level

    Rated 5 out of 5 stars

    Honestly I have no complaints

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This was my first ever computer upgrade I did myself. Was easy enough for a beginner to do. Massive increase in cooling, runs very quiet. Would recommend to a friend.

    I would recommend this to a friend
  • Pros mentioned:
    Cooling, Noise level

    Rated 5 out of 5 stars

    Great purchase

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    Posted . Owned for 1 year when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    1 year later still going strong no noises or throttling and I’m running a Ryzen 5 3600X and it’s cool and runs great

    I would recommend this to a friend
  • Pros mentioned:
    Installation

    Rated 4 out of 5 stars

    Only One Problem - Blocks RAM Slot

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Purchased for a new PC with an AMD Threadripper 2 CPU. Installation was easy enough and it seems to be working fine. My only complaint is that the cooler's USB connector blocks one of the RAM slots. Even the installation guide shows the connector blocking a RAM slot. Could be solved if the cooler could be rotated 90 degrees. Contacted Corsair support, didn't have any solutions.

    I would recommend this to a friend
  • Pros mentioned:
    Cooling, Noise level

    Rated 5 out of 5 stars

    Looks amazing

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    Posted . Owned for less than 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is my second one and very impressed with the quality and ease of install. And it keeps the rig cool and quiet,

    I would recommend this to a friend
  • Pros mentioned:
    Cooling

    Rated 4 out of 5 stars

    Keeps my R5 3600 nice and cool!

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    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I use this to cool my Ryzen 5 3600. Overclocked to 4.3GHz on all cores. Never gets hotter than 60C. The only bad part about this AIO is the cabling from the pump. They need to take Fractal Design's idea and cable manage everything into the sleeves of the tubes and place the fan controller on the radiator. All that will clean up the messy cables perfectly. Other than that, no complaints. It will take some PC knowledge to put it in correctly with minimal cables showing.

    I would recommend this to a friend
  • Pros mentioned:
    Cooling

    Rated 4 out of 5 stars

    Decent AIO

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This was purchased to go with the 680x case. It fits it well. The cooling? Well with Furmark running 24 threads at 4 ghz with the Ryzen 3900x it never exceeds 66 c. The cooling performs better with cool air being pulled through the radiator (positive case air pressure) It is 2 c higher if you have it pushing hot air from the case to the radiator (negative case air pressure).

    I would recommend this to a friend
  • Pros mentioned:
    Cooling

    Rated 5 out of 5 stars

    Great performance and looks

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    Posted . Owned for 1 year when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This cooler is great! I am using it to cool my Ryzen 9 3900x. Idle temps are around 35-40c and 50-60c while under load. The Corsair software allows you to control pump / fan speeds as well as the rgb on the fans and cpu block. This cooler includes the brackets for both intel and AMD which is also nice.

    I would recommend this to a friend
  • Pros mentioned:
    Installation

    Rated 5 out of 5 stars

    Easy to install!

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is my first AIO liquid cooler. Once I figured out where it could fit in my Maingear case (front), it was really easy to install. It comes with various brackets to fit both Intel and AMD processors. I do grid computing for WCG, so I'm glad I got this bigger size.

    I would recommend this to a friend
  • Pros mentioned:
    Rgb lighting

    Rated 5 out of 5 stars

    Works

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Been working well, has a little bit of noise upon start up and that might be the water being push through the tube. The rgb is amazing. Make sure to pick the one that fits your case. I was lucky that my case allow for 280 mm front mount.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    Great looks great functionality!

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Super easy to setup and high quality! It even comes with thermal paste already on it. This ones hard to beat for an AIO unless you need something bigger. This should be be enough for most setups.

    I would recommend this to a friend
  • Pros mentioned:
    Cooling

    Rated 5 out of 5 stars

    Good cooler

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Keeps my I9-9900K cooled. I don't think I have seen it over 80C yet.

    I would recommend this to a friend
  • Pros mentioned:
    Cooling

    Rated 5 out of 5 stars

    Corsair does it right.

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    Posted . Owned for 6 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Needed this Corsair liquid cooling for my new pc build. It looks amazing in person & definitely does the job right.

    I would recommend this to a friend
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