Pros: Gives my CPU very low temperatur

Cons: It's hard to fit in my case

Pros: Easy everything, I've had this product for a few months now and I've had no issues. Keeps my CPU nice and cool.

Cons: Not enough to take off an egg, but I wished it had the 4 pin connection instead of 3 for better PWM with my ASUS Maximus VII Formula MOBO.

Other Thoughts: I would recommend this product to anyone.

Pros: - I'm sure it'd keep my i7-6700k pretty cool

Cons: - Pump noise: it sounds like it's about to break or an impeller is hitting an obstruction. Horrible.
- Cost: it is more expensive than others in its class
- Software: CAM is not a good control software.

Other Thoughts: I bought this x61 based on my x60 experience. I knew the shortcomings of CAM software, but I still went ahead with the purchase. Upon install, the x61 makes a horrid pump noise. It may be cavitation, it may be an obstruction, or maybe a lot of air. I don't know. I do know that many, many, many others have reported this issue. The x61 differs from the x60 in that the x60 pump runs at a fixed rpm (at least, it does in mine: I had an NZXT tech rep tell me it shouldn't and I should rma it. No way.). The fixed rpm may prevent the noise. If I turn the x61 to full speed, the pump noise is greatly reduced. It only sounds like a fast clicking, instead of the grinding loud sound.

The CAM software is not good. Do a search.

I'm returning my x61 (Thanks, 'Egg!), and trying a Corsair AIO.

Pros: Easy to set up if you're running an Intel chip.
Significantly cools my cpu ( from 20-30 idle, 50-60 load to 11-25 idle, 36-46 load).

Cons: Its an annoyance to mount to the motherboard for an amd chip. It mounts firm, but its extra work that I wasn't comfortable with.

Pump fan can get loud on load. It sounds alarming but its understandable.

Other Thoughts: It wasn't too pricey and cooled my cpu down enough to make it well worth the effort. I do wish they popped in some edged fanblades. The current ones seem to struggle with moving air but they do feel durable.

Pros: -Easy Installation
-Great monitoring software
-Great performance, 6700k oc'd to 4.4 GHz idle at 25-30, 45-50 under load (Note the ambient room temp is about 75F)

Cons: -Should include higher quality fans, but wont dock an egg for that as it seems standard practice for the industry

Other Thoughts: -Not really a con, more of a personal preference, but I do not like the NZXT white fans, replaced with
-Love NZXT products over all, Love the minimalist design to their cases.

Pros: --Keeps the CPU cool. Idle 20c/Load 60c. I'm running an i5 6600K at 4.5Ghz.
--Very quiet.

Cons: Not really a con but: READ THE INSTRUCTIONS! Don't be like me.

Other Thoughts: Seriously, don't overlook the fact that you have to set your CPU fan header to 100%.

Pros: -Very quite when on silent mode
-Easy to install
-Black and white looks good with my black and white themed build

Cons: -Occasionally hear pump noise or water trickling even inside a silent Define R5 case

Other Thoughts: -Back bracket does not fit tight until the front unit is installed
-Included instructions say not to attach control wire to the USB on the motherboard until after CAM software installed
-Used on my 6600k overclocked to 4.5 GHz and runs really cool on silent mode never ramping up fans at all way more cooling power than was needed for this processor.

Pros: Rubber Tubes, easier to move around than H110i.

Cons: Coolant leak on both sides of radiator.

Other Thoughts: 5 minutes until a warp core breach!

Seriously, check your Kraken before installing it, Kraken does not do hardware replacement like Corsair does.

Pros: The Cooler is awesome and runs quietly. The Software that you can download for this is actually unique and give you full control of the fans.

The LED is just as great and is changeable through the NZXT CAM software.

Stocked Fans are amazing I didn't have to change them out for any of the fans I purchased for my new rig.

Mounting this thing was actually pretty easy besides the radiator which gave me a couple problems.

Pump is small and works great which means getting to

Cons:
#1 Cables on the pump are good, but the one particularly I'm disappointed in is the inter USB2.0 you have to connect in order to use the CAM software to control the fan speed and see the temps of your CPU and the Liquid. It's too short to maneuver behind the motherboard tray. I had to purchase an extension cable in order to cable manage. I would suggest to NZXT to make this cable longer.

#2 Red my favorite color is basically not present for the LED it gives the option but the color looks more like an orange than red which is really disappointing. :(

Other Thoughts: I would say to get this cooler to have an easier way of mounting the pump since it is basically self explanatory on how to do it. I don't have issues with it yet and will update if anything happens in the future.

Pros: - Keeps my AMD FX8350 between 35-42*C, even while gaming. When idling, the temp does seem to bounce around a lot, but the liquid temp usually sits at 31-33*C.
- Very quiet
- Noticeably louder in Performance Mode (or if you manually crank up the fans and pump speeds), but it doesn't sound like a vacuum cleaner. I guess it can be described as "realistically loud"?
- With the exception of the S340 case, this should be a relatively simple installation. Please see my notes below about using this in a S340

Cons: - The included fan mounting screws could be just a bit longer. I think they're something like 28mm, and the fans are 25mm (a little thicker due to the rubber mounting pads), leaving only a couple threads exposed for mounting. Conventionally, this isn't an issue, unless you're running a push configuration inside an NZXT S340 case. The screws not only have to pass through the fans into the radiator, but in this particular setup, the screws also need to pass through the front baffling of the case, as well.
- The hoses are certainly long enough to use this setup in just about any case configuration, but I feel like maybe they could be just a bit shorter? I could be wrong though, and it doesn't affect the functionality of the X61. It looks a bit lame having the hoses hanging all over my GPU, but I'm not docking an egg for this.

Other Thoughts: I'm not docking an egg for the screw issue, because I was still able to mount the X61 in my case securely with no problems, but it was a bit of a hassle. I'm definitely docking an egg off the case for a poorly designed front section, though. Without having removed the wire separator first, there's no way to run a push/pull config, and even with a push-only, there's hardly ANY room at all, even for a low-profile setup like the X61. Kinda sad, seeing as how they're made by the same company.