Pros: *If upgrading from the H60, you can use the existing bracket for the H80i V2! No removing the motherboard!!!
*Performance is only slightly better than my old H60
*Comes with the Corsair Link USB cable so control of your H80i can be done from the desktop in Corsair Link App.
*Pump & Fans are def quieter than the H60 as well
*Corsair Link App is great. Not only does it give you details on system temps but can help you to manage them in app. You can crank up the Pump & Fan Speeds.. great options!!

Cons: *Performance is only slightly better than my old H60. But with the H80 being much much quieter and including the Corsair Link USB cable I'll get over it. Makes a big difference in usability.
*The radiator is also twice as big as the H60's and doesn't properly fit inside my case. I was able to get the side panel closed but it's def bulging a bit. So be aware of the thicker radiator. It may be a problem.

Other Thoughts: All testing was done at Quite settings and only one pull fan. I'm using a Thermaltake Urban S31 Snow Edition case with dual intake Thermaltake Riing 120mm fans on top and a single Riing fan for intake on the front. I figure, as the point of water cooled system is to obtain as much silence as possible, if it handles everything at Silent then at full bore it should be able to handle over clocks with no problem. To simulate full load I used 4 instances of CPU Burn In on my i5-6600k to max out all 4 cores and ran for 5 minutes each. I ran this test a 4 times and the results were consistent. I also waited a full week before testing to give the pre-applied thermal paste time to cure and settle.

Corsair H60
Idle - 23c Package - 27c
Active Use - 27c Package - 30c
Load - 51c Package 51c

Corsair H80i V2
Idle - 24c Package - 30c
Active Use - 28c Package - 34c
Load - 50c Package - 48c

Idle performance with a single fan on the quiet setting was a bit underwhelming, pretty much on par with the older H60. However, once you push it you can see how much more efficient the new pump and radiator actually are. Keep in mind that my older H60 did not come with the Corsair Link USB cable and thus I was never able to adjust fan speeds. So they were at 100% all day everyday. So for the H80i to keep up with the H60 running at 100% proves to me that it is def a step up. I can only imagine the improvement by adding the second fan & using a higher fan speed profile. Or perhaps upgrading to higher quality radiator fans for additional performance. Overall I am very impressed with this cooler. Absolutely give it a look!

Pros: -Very efficient, at full load using Handbrake or another CPU intensive program, I barely reach 55C
-Under normal load in quite mode, average 32-38C
-Both temps quoted in Normal Mode, stock speeds - 4970K.

Cons: None really

Other Thoughts: A few things to consider:

This is a beast, and bigger than it looks in pictures. It should still easily mount in the back 120MM fan position in MOST cases. The only possible issues are motherboards that have very tall shrouds over the IO port area, in slimmer cases. I have a Corsair Carbide 230T and it fits perfectly.

For reference, the above quoted temps are with an i7-4970K at stock speeds, I've overclocked a bit to 4.6GHz, temps stayed about the same.

Be sure to install Corsair Link, attach the pump to a USB header on the motherboard, and set whatever fan header you attach the pump to at "100% or Full Speed" in BIOS. This will allow you to customize lighting, see stats, and set one of the three modes: Quiet, Normal or Performance.

Pros: Cooling wise this thing is pretty good for a AIO... Shaved 33 Celsius off my R9 290X in combination with the HG10 A1 bracket. Which is saying alot because I ran this cards fans at 80% with reference cooler

Overall, I'm happy with this.

Cons: The pump makes an excessively loud grinding noise EDIT: I have these hooked directly to Molex using an adapter and I found using the Link software with the pump hooked up with usb and controlling the pump(Set mine to quiet, set to performance by default) can help

Other Thoughts: All in all this product does do a good job at cooling, really love the bracket for the card though, that and one of these AIO coolers keep these hot cards nice and cool with alot less noise. Would have gone with the 240 mm radiator though if it could fit it in my case

I'll bump to 5 eggs if no issues later on down the road with the grinding noise

Pros: It ran

Cons: Installed the H80i v2 idle/max temps went over 10C+ than on air currently back on cooler master evo 212, I even changed the thermal compound to high performance brand I always use same results as stock paste.

Skylake i6700k OC'd @ 4.6ghz running air before testing because I thought the reviewers were overclocking the skylakes wrong but nope.

Case THOR V2 26-28C idle never over 57C max load

Other Thoughts: Refunded was a let down seems these have a thing for running hot on skylake chips, I looked through the reviews on all the coolers before purchase everything was way hotter than mine on air.

Pros: Generally very quiet.
Keeps my 4770K clocked @ 4.7GHz.
Under artificial maximum load, temps never exceed 90°C using the quiet profile.
Under artificial maximum load, temps never exceed 81°C using the performance profile.
Under normal use load, temps never exceed 85°C using the quiet profile.
It mounts easily with no fuss. Much easier than some of Corsair's previous designs.
The product looks elegant and refined.
The radiator is quite thick and so are the hoses that run to it.
It's got 2 fans in push/pull configuration, both PWM, both controlled by the device itself, which I like as opposed to static speed fans or having to be dependent on something else to control fan speeds.
The pump/block top lights up. The color of lighting is configurable.
The i in the product name denotes intelligent and can connect via USB or to a Corsair Link Hub. You can monitor the device through the use of the Corsair Link software.

Cons: I'm not a big fan of the Corsair Link software. When I used it, it would frequently peg out one of my CPU cores to 100%. The only solution was to restart my computer and then the issue would disappear for some time, or to turn off the Corsair Link software altogether. At time of this writing I noticed that there is an update to the software. Perhaps it fixes the issue. I don't know as I don't have time to test.

The software is how you configure the devices to main settings, which is Profile and LED color. The LED you can set to any color. The profile's choices are Performance, Balanced and Quiet. I ran on Quiet the entire time as I don't see the point of all this elaborate setup if for nothing else than trying to be quiet. Performance is just too loud. Balanced is quieter, but still noticeable.

I hate having to run and extra USB cable to my motherboard just so I can control the profile and color. I like to try and keep the cables neat and tidy and the USB cable comes off the bottom of the pump and forces you to run it across the motherboard. I was able to route mine to the top of the PCI mounts and around to sort of make it less noticeable. Still I'd give up color choice and be happy with a jumper to set the profile on the device itself if it meant avoiding using the USB cable and Link Software.

Other Thoughts: Before this I had an H110 on my CPU. I used PWM fans on it controlled by the motherboard itself with a fan profile based on CPU temp. It was very quiet. However the fans would speed up based on the CPU temp, not the liquid temp. So despite the cooler easily being able to keep the CPU cool, when the CPU would get a load and ramp up it's temp, the fans would immediately spin up. So it wasn't ideal.

When I got this, I moved my H110 to my Titan X using Corsair's HG10 N980 mounting bracket (which it seems they only made like 12 of them or something). Just as a side note, the HG10 N980 wasn't a great experience and despite the end result being satisfactory, the install was a bit of a pain. But I digress.

I was hoping with the extra thick radiator using push/pull that it would be a match for the 280mm radiator of the H110. It keeps the same overclock. But the temps are a bit higher, which I could care less.

Here's the one thing overall that made me take off a star and that's because of the CPU bug in the Link Software I mostly had it off and because of that I think it might have been using the Balanced profile or something, because if I'd be gaming for a long time, eventually the fans would speed up and become noticeable. And maybe because the Titan X was dumping heat into the case combined helped further the issue, I don't know. My whole thing is quiet and sometimes it wasn't.

Now if I can get the updated Link Software and it doesn't have the CPU bug, and I can live with the USB cable routed across my board and I can keep the Quiet profile engaged then it's probably not a big deal.

Overall though it's still a great product. It's hard to go wrong with any Corsair AIO liquid cooler. They look and perform nice.

Pros: Great cooling, easy installation, and simple to use.

Cons: nothing major.

Other Thoughts: very satisfied, price per performance is great!

Pros: - Cools well. Replaced an H50 with this on a Haswell i5 4690K. Brought my idle temps down from mid 30sC to a running average of around 26/27C. Using prime95 I max out in low 70s compared to mid-high 80s. I use in a single pull configuration.

Cons: - Fans were obnoxiously loud. I've replaced both of them with older GELID Solutions FN-PX12-15s.
- Corsair Link was pretty useless to be honest. Configuration options were minimal and eventually I just disconnected the usb cable and connected two of my 200mm slow rollers to the pump fan-wires, then I pinned the radiator fan and back/case fan to the cpu-fan headers on the motherboard and configured those inside the bios (AsRock Z97 4 Pro) to run as I desired.

Other Thoughts: - This is worthy of mention though I'm not willing to call it a con because I knew about it from all of the other reviews. The radiator is larger than what I expected even after reading everything. I installed it into a full ATX Thermal Take Overseer RX-1 and it was not possible to get the second 120mm fan on the inside of the radiator to complete a push/pull due to the thickness of the radiator and the width which pushed the fan into the top of the installed 5.25" drives (mounted on the 2nd slot in order to [ironically] leave room for the fan/radiator).

Still, installation was actually easier than the H50 even with the stiff tubes and the hefty radiator. I would recommend for the cooling capabilities and the price.

Pros: Keeps 6700K at 28.8C when idle and around 35C when under load.

Cons: Installation Instructions are very basic. No information is given about the arrows on the fans. There are two arrows. One faces the blades and the other faces the first arrow. The first arrow if the way the fan will blow. The second arrow... I still don't know

Pros: Big radiator, nice looking pump design, pump mounting system.
Works very well.

Cons: Fan cabling not detachable from pump housing.
Corsair Link 4 software has no user manual to help user use it.

Other Thoughts: Good product and would buy again if needed.
Newegg is my computer component haven.

Pros: THIS KEEPS MY CPU COOL. I WAS USING A STANDARD HEAT SINK... BIG MISTAKE HAD TO WAIT FOR THIS TO ARRIVE IN ORDER TO GAME.. I'M GLAD I GOT IT..!!

Cons: NONE

Other Thoughts: HAPPY SO FAR