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Antec > 
Item#: N82E16835209078

Antec KUHLER H2O 650 Water/Liquid CPU Cooler 120MM

  • 6.3" (H) x 4.7" (W) x 1.0" (D)
  • RGB LED
  • powerful PWM fan
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Learn more about the Antec KUHLER H2O 650

Quick Info

Warranty

  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years


Customer Reviews of the Antec KUHLER H2O 650

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Showing 47 of 47 reviews - Clear Filters

  • garrett s.
  • 3/16/2015 11:47:14 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsDo Not Get This

This review is from: Antec KUHLER H2O 650 Water/Liquid CPU Cooler 120MM

Pros: Small and easy to install.

Cons: Started to heat up and get very loud after a few months. I ended up buys a different cpu cooler.

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  • Tammy L.
  • 3/15/2015 10:40:00 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGood all-in-one.

This review is from: Antec KUHLER H2O 650 Water/Liquid CPU Cooler 120MM

Pros: 1. Almost silent at idle, still quiet at load.
2. Effective cooling - AMD FX-6300 sitting in 20's at idle and 30's at 100% load/4.1ghz dynamic clock.
3. Temp indicator is useful and looks cool.
4. Included shroud improves airflow.
5. Unique combined pump/fan design reduces number of moving parts, moves pump away from the waterblock, and may increase reliability.

Cons: 1. The unique pump/fan design is somewhat bulky, especially with the shroud; check your space measurements to make sure it'll fit where you want it.

2. It's not expandable like a DIY solution, but you already know that.

Other Thoughts: I'm happy with it. It was $37 on sale and after rebate. It isn't too difficult to install if you have some experience. If it fits your cooling and space needs you can't go wrong with it, and there's also a 240mm model available.

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  • Anonymous
  • 3/8/2015 8:01:16 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsNot happy

This review is from: Antec KUHLER H2O 650 Water/Liquid CPU Cooler 120MM

Pros: The light telling you the temperature is pretty nice

Cons: The fan was a little loud when it got a little warm atleast until the fan stopped spinning and just twitched luckily I have a push pull method off two power lines so I can still use it till I replace

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  • Anonymous
  • 3/5/2015 7:59:16 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year

1 out of 5 eggsWaste of money

This review is from: Antec KUHLER H2O 650 Water/Liquid CPU Cooler 120MM

Pros: Felt great when I threw this in the bin.

Cons: Everything

Other Thoughts: I bought this cooler to go with my new fx 8350 and it failed miserably. I gave it a good run of 5 months in that time I had reapplied thermal paste at least 8 times and even had my friend who has also built many pc's install the unit from scratch 2 times. I did speak to antec and was told the temperatures I was getting were the standard temps to be expected. Eventually I got sick of the high temperatures I was receiving. I took it out put on the stock standard cooler that came with my cpu and temp is now 30 - 40 degrees cooler. Really wish I had just thrown it away earlier but i really did want it to work since I had spent the money on it.

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  • Anonymous
  • 1/27/2015 6:50:28 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

3 out of 5 eggsgood...not great

This review is from: Antec KUHLER H2O 650 Water/Liquid CPU Cooler 120MM

Pros: *Radiator of good quality
*Pretty light on cpu block to tell you the temp.
*comes with all brackets and hardware for multiple applications.

Cons: The cooler design is awful, the variable speed fan is "farbage" <(spelled wrong on purpose) doesn't move any air at all. The way they des

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  • david b.
  • 1/13/2015 5:03:09 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsDoes what it is supposed to!

This review is from: Antec KUHLER H2O 650 Water/Liquid CPU Cooler 120MM

Pros: It works. Looks Great. End...

Cons: ...... It wasn't Free?

Other Thoughts: Like i said it worked great was easy to install and has no issues. Can NOT ask for much more.

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  • Anonymous
  • 12/14/2014 9:07:30 AM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

3 out of 5 eggsFan did not work

This review is from: Antec KUHLER H2O 650 Water/Liquid CPU Cooler 120MM

Pros: Seems well made.
Has RGB light on heatsink that changes color with temperature.

Cons: Fan defective.

Too difficult to install heatsink screws.

Other Thoughts: Fan not starting is a common issue when not plugged in correctly and BIOS not set correctly. Tried everything per instructions. Pump and light work -- not fan.

Cannot RMA with Newegg because I had cut product code off box for Rebate. Have ticket in with Antec for a replacement. But, no answer as of this writing.

Difficult aftermarket heat sink screws are not uncommon. But, some brands are actually pretty easy -- why not all? Easy installation should be a key part of the design. Just make the startup screw thread a bit longer (or spring a bit shorter), in this case.

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  • Dethrick S.
  • 12/1/2014 2:45:04 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year

5 out of 5 eggsGreat Cooler with some issues

This review is from: Antec KUHLER H2O 650 Water/Liquid CPU Cooler 120MM

Pros: The cooler is great - maintains 30 -35 C with around 8 apps running at the same time.
Nice Light
Fits case fine

Cons: Difficulty installing... Boy was that a tough install. I was sweating my tail off.
The noise is a little loud.

Other Thoughts: I initially went to the store to get a well known heatsink for my AMD 6300 CPU, I found this one on sale for 20 dollars, why not??? Purchased it, took it home for the install. Took a while to install, but it

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  • Darice M.
  • 11/12/2014 11:54:23 AM
  • Tech Level: High
  • Ownership: more than 1 year

4 out of 5 eggsGreat for the price

This review is from: Antec KUHLER H2O 650 Water/Liquid CPU Cooler 120MM

Pros: I bought this at my local computer store on sale about a year ago, and it is a great liquid cooler for a first time buyer. Everything is prefilled, and it is pretty much plug and play. The hardest thing was mounting the fan and radiator. It has a bit of a strange screw layout. It did fit my fan mount with a bit of coercing, but it was not easy. I have installed this fan on another computer and it had the same problem. It does work, but I'd get some rubber o-rings and ditch the screws you get it the package for your own because you will be screwing it in VERY TIGHT! Compared to other prefilled liquid systems the hoses are very flexible. I managed to fit it in a midsize case with a GTX 660, which took quite a few zip ties to get some cables out of the way. It plugs in to the CPU fan connection on your motherboard, of course. You cannot vary the speeds of the fan directly on the unit, but you can from the BIOS screen by modifying the CPU fan speed. The LED temp indicator on the cold plate unit is a very nice touch. It is easy to monitor the approximate temp on my PC while overclocking or playing a graphic intensive game. The hottest it has ever gotten was while overclocking and running a large video game, but it still functioned fine. I'd blame the graphics card for a good chunk of the heat. There are some minor downsides, but all in all you get a very solid unit for the price you pay. I will definitely recommend this to any prospective PC builders in the future as a budget cooler.

Cons: Strange mounting config
Runs a bit loud, but not too much of a nuisance
Somewhat difficult to put on CPU/motherboard mount. Takes your time when installing it!

Other Thoughts: As with any liquid cooling system, take your time. I've installed quite a few and I always spend at least 45 min installing, connecting, and double checking the connections. Depending on your case set up it may be a good idea to take the motherboard out, but ONLY DO THIS IF YOU HAVE TO! Most cases will have the area behind the CPU open when you take the back off, but I've come across some without a hole.

Happy building!

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  • Erich O.
  • 11/8/2014 10:48:04 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year

4 out of 5 eggsGreat with i7 4820k 3.7GHz

This review is from: Antec KUHLER H2O 650 Water/Liquid CPU Cooler 120MM

Pros: The temperature color distinctions are a great addition. Very quiet.

Cons: Hose and chassis for the radiator were difficult to maneuver within my ANTEC full tower.
It seems like the fan speed determines the color, not the temperature of your CPU.

Other Thoughts: I decided on the single fan instead of the double fan ONLY because of the price difference. In hind-sight I should have gone with the double. I have a push-pull setup, but on heavily modded games I get the temperature up into the deep pink range. (for all you uninitiated it goes white, light blue, blue, purple, pink, deep pink.... and I can only assume a red follows) I have tried to push its limits, and as a nod to my processor I can run a stable RPG with over 100 mods, most of which are graphics improving, without overclocking. This fan keeps it cool enough but you will hear it when it gets to the pink range in temperature/ fan speed. On an added note, the Antec case I have (with 6 fans) seems to get air out of the case too well, preventing cooler air from reaching the radiator.

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Item#: N82E16835209078
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