Antec Kuhler H20 920 Liquid CPU Cooling System LGA775/1156/1366/1155 AM2/AM3 2400RPM

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Got this for $55 on boxing week. Excellent value and performance. Very silent. Has thermal compound pre-applied. Mounting it was easy.The only down side (which is not so bad) is that it uses a usb header on the mobo so it eats 2usb ports to give you interaction and you must install drivers. The ones on the cd seem to work. Good luck trying to find anything on the antec site, they are probably trying to get rid of this entire product line. Manufactured by asetek for antec. (Asetek logos everywhere!)

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Great cooler for the price, keeps the temperatures down, and pretty quiet as well.

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Very good product, easy to install. Changed the crappy fans for 2x Noctua Nf-F12 with rubber pads. Keeps the CPU under 35deg under normal speed and under 40deg with load.

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This is hands down one of the best cooler you can buy. Lots of overclocking potential.

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This is a heck of a cooler, it really keeps the temperatures down. It moves a lot of air, and pretty reliable so far. If you have an overclocked system, then this is the cooler for you.

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Pretty good cooler overall if you are looking to put this into a confined space. id recommend a heatsink if you are not restricted in space like me

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The product itself has a great build quality. The mounting system is quite hard to deal with. Once it is on, you need to be sure to position the radiator so that the air bubbles will migrate to it. The stock fans are quite and do the job.

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If you lay out all the parts and read the instructions and then fit it all together and play around with the fastening system any one can figure it out. if not cheat and watch how to videos. Overall get good temps. Similar performance to my hyper 212+ in push pull also. Only got this to be able to avoid blocking tall ram such as the corsair vengeance modules with tall heat sinks.

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It is about the same about corsair's h80 cpu cooler, easily overclockable to 4.0GHz stable, although can build some heat up.Funny thing is, I got this cooler, then I got Corsair's H100 Extreme performance cpu cooler which costs the same. Double the radiator width, 2x more fans, LEDs, Corsair link, fan control. The Kuhler does not have.

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Unlike others , I had a very easy time installing the 920 into my Antec case. The 920 is very quite in silent mode, i can't hear a noise from my case much quiter then the stock heat sink fan.Also on pump noise, there is a small gurgling sound at start up and then total silence. Unless you stick you head into the case.

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I built my latest gaming rig just over 6 weeks ago using this Antec Kuhler H2O 920 to prevent my i5 3570K Ivy Bridge from melting down due to overclocking. I am really impressed as it keeps my processor (OCed to 4.5GHZ) cool at extreme loads!Installation was not difficult and I can't hardly hear it even at very high demanding loads.I am very satisfied!

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Unlike others I had very little trouble getting this installed. I only ran into one easily fixed problem while following the instructions and it was my own fault for not paying closer attention. Even so, watching a video on Youtube still helped when it came to the actual mounting of the cold plate. Having someone to help hold things for you makes installation go a lot smoother too. This is my first time using water and was pretty nervous, but in the end it was worth it. It's well made, cools quite well, and is virtually silent. I can only hear the pump if I put my ear right next to it. I love the software too which is a great addition. I wish all cooling devices were designed to be managed like this. The only down side was that the included screws were too short. My case is a Lian Li PC-8FIB which uses rubber grommets for mounting fans, plus a wire finger guard. In order to get it all mounted, I had to buy 6-32 machine screws that were 1-1/2" long. This choice required very careful measuring because there isn't a lot of room for error. And if anyone is wondering, a 140mm fan does fit into the top of this case and doesn't touch the radiator. Happy with my purchase and would buy it again despite not being a fan of Antec.

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Keeps temperature consistently, and very easy to modify fan speed using Antec's software.

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I really like this CPU cooler. Does a spectacular job of cooling my Core i5 Processor. Haven't over-clocked yet to test the true strength of this cooler, but I have yet to see my CPU temp go over 42deg (Celsius). Installation was a little bit tricky, but once installed looks and works great!CON: I sent in the MIR including the UPC code to Antec, It was rejected saying that the UPC was not included so they could not do anything. I made sure that I included the UPC in the envelope that I sent all the paperwork in, but apparently it was lost between the time I dropped it in the mail, and when they were processing it. Antec has not done anything for me with this just stating that they cannot process the MIR due to no UPC included. I have no UPC left on the box to send to them, so I am stuck between a rock and a hard place. Good thing it was only a $10MIR.I MAY avoid Antec products that have MIR for this alone. Otherwise I really enjoy Antec!

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I had a hard time deciding between this and the Zalman cnps 20LQ but the 49mm rad. and dual fans instead of one sealed the deal. The usb controller for the software also a big plus. Loud fans but changed push fan to LEPA Casino for lower noise and L.E.D. lights as I mounted this nicely in my dvd drive bay under my burner above hard drive cage.It draws in cooler air there as well as keeping the rear of system clean. Very versatile system has many options for mounting due to thick but flexible hoses. Will be almost totally silent after the reducing adapter to cut power some to pull stock fan while retaining controlability and performance. This is so good that doesn't need 10 cfm to keep my 8 cores refrigerated!

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A great cooler. With a bit of fiddling you'll have a very cool cpu in no time. But the way they say to put it together is ok, but I'd seek a third party for help if it is your first time.

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Works okay and keeps my cpu cool but does the clicking noise that apparently a lot of people have.

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I managed to install the Kuhler 920 into an Antec 900 tower with only a few minor changes. The case has a clear plastic side mount for an additional 120mm fan that did not allow enough clearance for the case to close after the radiator/fans were installed. This was easily removed with a screwdriver. I also purchased an eight pin EPS power extension cable to ensure I could clear the radiator and plug the power into the motherboard without having to bend/stretch the wires too much from the PSU. The other major downside to the Antec 900 was the lack of access to the back of the motherboard. The board has to be removed to access the back plate.With the stock Intel fan on my 2700K I was seeing 89-91 degrees C under 100% CPU load at stock clock speeds. With the Kuhler 920 there was a 30 degree temperature drop  under load. At idle the CPU hangs around 26-30 degree C. Water temperature varies from 30-33C at idle and 39-42C under load. For now I left things stock, might look at overclocking and swapping out the two Antec fans with a set of Noctua's down the road.This was my first experience with a sealed water cooler and I was quite impressed on how easy it was to get it all up and running. (with some patience and attention to details) I am sure with more room in the case I could have used an air cooler and achieved similar temperature drop s, but this solution was the best for my case and hardware combination.

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Bought the item over 35 days ago. RMA process from Antec is extremely slow. It has been three days and still waiting to return this sucker.

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Disclaimer - I have a love hate relationship with this coolerThis is my first liquid cooler and it works perfectly now that it is installed. Quiet at low temps and maintains those low temps.Installing this cooler was like pulling teeth. My case (Corsair 600TM) did not get along too well with the fans and radiator. For the life of me, I could not get the screws to make contact with the radiator through the fans. I ended up having to recess the screws in the rubber grommets of the case in order to get the fans to stay in place. I tried without the grommets and the supplied metal o-rings, and couldn't make it work. I also tried without the grommets and o-rings, and the screws would slide through the mounting holes. (Keep this in mind if you are getting the same case or a similar one from Corsair).The instructions suck. I thought they were alright for the most part, but then I'd get stuck and have to check YouTube tutorials to figure out the next step. Could this just be me being incompetent as a human being - yes. Just keep it in mind. (And if you're having the same problems as me, I'll give you a high-five and console you in your time of crisis).

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I bought this to go with my Q9300 (LGA775) and it managed to cool it well enough clocked at 3.8GHz l 1.4V. Installation of the 775 socket was a pain in the rear, actually had to bend/flex the back plate to install it. 1155 was no problem at all, just fit right in.I have since upgraded to a 3570K and this cools it much better even sitting at 4.5GHz (havn't tried any higher just yet). Idle temp on the ivybridge sit around 23-25 degrees at stock and about 30 overclocked. Load temps vary but usually around 40ish overclocked with my setup. All temps taken from Asus Monitoring program not the antec CC.Liquid temps hover around 33-37 under load, depending on fan speed.

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First time to use water cooling. Now convinced it is the way to go for overclocking.

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Going from a stock AMD CPU cooler for an AMD Phenom II X64 quad core 2.4GHz running at 45-50 degrees idle and 60-65 degrees under load, I expected the Kuhler 920 running on an Intel i5 3570k Ivy Bridge quad core at 3.4GHz to run hot. I expected incorrectly. Running at 30-33 degrees idle and at only 39-40 degrees under whatever non-benchmark loads I've been able to throw at it using Skyrim, The Sims 3, and Minecraft (I'll be trying more of my library soon), I am shocked and now a firm believer in water-cooled CPUs.This fits perfectly with the Gigabyte motherboard I installed it on (Gigabyte Z77X-UD3H), so fitment issues with RAM were not a problem -- the RAM is well off to the front. In fact, on that board it draws air over the pump and over the RAM as well, helping cool that as well.Installation was very difficult, and why I dropped the rating (otherwise it'd be a 5 for sure), because the screws would not fit the mounting holes on the back of my Corsair Obsidian 550D case if I removed the rubber grommets, and with the rubber grommets in place they were too short -- and if mounted under tension would still slip through the grommets. Using the included washers with the kit, they were also too short. However, a trip to a local Rona netted me a box of 1+1/2" 6/32" machine screws and these served perfectly for mounting on the case with the rubber grommets and washers -- for other cases, you might have to go to town with a Dremel, meaning this is not a simple installation. The instructions are also sometimes cryptic and skip a lot of steps, but if you look at the parts you're given carefully it shouldn't take you too long to figure out that certain parts need to be assembled together prior to mounting them onto the cooler. Perhaps the hardest part is snapping the retainer ring that holds the clamp on the interface side of the pump -- you have to position it in place and then gently push, pop, twist, and nudge as needed until all the four clips are snug. The instructions are almost useless here.I am a little concerned about the obvious presence of air within the pump hoses (water flow is very audible when shifting the radiator and pump when not attached to the CPU) -- with my current motherboard setup the radiator is higher than the pump/CPU cooler but if the case fan would be installed lower than the pump, I would definitely be worried about the possibility of the impeller seizing if it hits a massive bubble. As this system is not designed to be filled by the end-user (I did note there are hacking guides available through your nearest search engine for how to DIY this if necessary) I didn't work the air out of the system, but thankfully there doesn't seem to be any negative side effect.All in all, a sound investment. My only regret is not waiting until it was on sale, but at the full price I'm still very pleased.

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Keep my i5 2500k unlock at 24c idle and 35c when in load..I bought new pair of after market fans.. Cougar is best fit for it.. Silence and the same time it blow lots and lots of air.. and i think i have the old one 'cus the i dnt have the color coded plastic like in the video.. And Btw.. Check the web for Instruction..

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I got this HS on sale for $85. For that price, it's still a bit of a gamble whether or not it's worth it.Installation was kind of a pain as not everything is documented (ie the ring that fits over the clamp).Cooling results are not as good as I'd like them to be.When attaching a fan directly to the cooler using the washers provided, I still managed to strip some thread on the heatsink itself. Normally, I'd take responsibility, however LIGHTLY tightening the fan on the sink should not have stripped that... Antec needs to find a better fan securing mechanism.