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Zalman CNPS20LQ Liquid CPU Cooler

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The low profile ZALMAN CNPS20LQ features the latest liquid cooling technology, simple installation, and maintenance-free operation. Pure copper Micro Fins, efficient radiator and an ultra quiet 120mm PWM fan merge to deliver superior cooling performance. Broad socket compatibility makes it suitable for almost all the mainstream motherboard platforms.

  • newegg Easy Installation & Maintenance Liquid sealed water cooler provides convenient installation and does not require any maintenance.
  • newegg Built-in Pump within Water Block Built-in pump within water block minimizes tubes and allows rapid circulation of coolant, thus enabling quiet computing.
  • newegg Micro Fins Micro Fins made of pure copper within the water block provide excellent heat transfer.
  • newegg Versatile Compatibility CNPS20LQ accommodates a broad range of sockets including Intel LGA 2011 / 1155 / 1156 / 1366 CPUs and AMD FM1 / AM3+ / AM3 / AM2+ / AM2 CPUs & APUs
  • newegg Durable and Long-Lasting Tubes Durable and long-lasting tubes are elegantly finished to prevent leakage and guarantee safety.
  • newegg Slim Water Block Design The water block’s height is 28mm and designed to be installed in ATX cases as well as slim or LP (low profile) cases. (However, this applies only to cases which support 120mm rear fan.)

Learn more about the Zalman Tech Co., Ltd CNPS20LQ


Liquid Cooling System


Block Compatibility
Intel Socket: LGA 2011/1366/1155/1156

AMD Socket: FM1/AM3+/AM3/AM2+AM2
Block Material


Radiator Dim.
153(L) x 120(W) x 38(H)mm
Radiator Material


Fan Dim.
PWM 120mm
900 ~ 2000 +/- 10%
Fan Noise
17 ~ 36 dBA +/- 10%
Fan Connector
4 Pin


Fan Bearing: Long life bearing

PWM Duty Cycle: 30 ~ 100 +/- 5%

Connector: 4-Pin(Fan), 3-Pin(Pump)

Rated Voltage: 12V

Weight (Waterblock): 195g

Easy Installation & Maintenance

Built-in Pump within Water Block

Micro Fins made of pure copper within the water block provide excellent heat transfer

Durable and Long-Lasting Tubes

Slim Water Block Design.

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

Customer Reviews of the Zalman Tech Co., Ltd CNPS20LQ

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  • Vida P.
  • 12/28/2013 10:50:27 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

2 out of 5 eggsWorks Well, While alive

Pros: Keeps the CPU cool, Little noise.

Cons: Died in 1 year 4months. Was hoping for a little more longevity from this product.

Id recommend having a backup cooler for when the pump dies, nothing worse than in the middle of work pc over heating and going down till you can find a replacement.

Did you find this review helpful? Yes No

  • Hayastan M.
  • 9/9/2013 4:09:39 PM
  • Tech Level: Average
  • Ownership: 1 month to 1 year

5 out of 5 eggsGreat customer support

Pros: This liquid cpu cooler is great.

Most of all Zalman's customer support was great. One day i noticed that my CPU's backplate screws were stripped so i went to Zalman support page and filled out a replacement parts form and about a week later i received all new backplates and screws.

Cons: can't think of one.

Other Thoughts: i am happy that i was able to get my parts replaced

Did you find this review helpful? Yes No

  • Alec L.
  • 1/12/2013 4:14:33 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsAbsolutely amazing

Pros: Everything about this cooler is amazing I was able to over clock my processor from 3.8ghz to 4.4ghz and my temperature only went up one degree. It's also very quiet

Cons: None

Other Thoughts: Make sure you have a big enough computer case because its a little big and won't fit in an average computer case.

1 out of 1 people found this review helpful. Did you? Yes No

  • Alex H.
  • 1/11/2013 3:12:03 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year

5 out of 5 eggsQuiet & Deadly

Pros: Quiet, efficient, Cold, Easy to install

Cons: None that I can think of

Other Thoughts: I got this for my new gaming rig for college. Works great and was installed within minutes. swapped out a back fan for it. It comes with thermal gel already on it and is ready out of box. It keeps my CPU at around 20-30 degrees Fahrenheit tops. Great for those who use heavy frame rate programs.

0 out of 1 people found this review helpful. Did you? Yes No

3 out of 5 eggsZalman

Pros: Good cpu cooler..keeps system cool and very quiet.

Cons: I didn't receive the Intel backplate in original package but was ok because was installing on an AMD. Upgraded to Intel I7 and need a backplate...well Zalman has no customer service at all. No phone number just an email address that takes weeks to get a response. I will steer clear of Zalman products in the future..

0 out of 3 people found this review helpful. Did you? Yes No

  • Cristobal A.
  • 12/29/2012 11:47:57 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsReally Like It

Pros: Keeps my CPU really cool. High 90s degree (F) in the summer, and mid to high 80 degrees during the winter. I know most people here prefer using Celsius.

Cons: The directions weren't the best.

Did you find this review helpful? Yes No

  • Carol H.
  • 11/29/2012 11:36:44 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year

4 out of 5 eggsGreat Cooler

Pros: 1. easy to install if you know what your doing
2. relatively quiet
3. good performance

Cons: 1. fan was DOA, had to use a case fan as a replacement
2. didn't come with enough long screws for push/pull config with your own fans
3. can be loud depending on ambient room noise

Other Thoughts: would have been nice to have a working fan come with it, also coming with two fans for push/pull would be nice like the Corsair H80.

1 out of 1 people found this review helpful. Did you? Yes No

  • john a.
  • 11/18/2012 6:52:42 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year

4 out of 5 eggsRebate ??

Pros: Works very good. Keeps temps 31c at idle and never over 52c with a load.

Cons: Minus one star for rebate. Don't hold your breath waiting for it. I sent mine in over 3 mo's ago, recieved an email saying it was recieved and to expect a rebate. Said rebate is way over due. Bought 2 of them and will buy more if said rebate ever gets here. If not , will never buy from Zalman again.

2 out of 2 people found this review helpful. Did you? Yes No

  • jake m.
  • 11/15/2012 5:11:11 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsuse with amd

Pros: Oc'd an amd 8150 to 4.6 ghz with this cooler and kept mb temp at 56 and CPU temp at 35

Cons: So far none haven't had it long enough yet

Other Thoughts: At first i didn't think it would cool that well but i was wrong. Installation wasn't the easiest but was do-able

1 out of 1 people found this review helpful. Did you? Yes No

  • Alexander L.
  • 11/2/2012 2:33:35 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsCPU Liquid Cooler

Pros: 1. Cool
2. Quiet
3. Solid construction
4. Set it and forget it

Cons: 1. Bad instructions (more details)

Other Thoughts: I was actually very skeptical of a liquid CPU cooler that you don't go back and maintain. This thing is very quiet paired with a mobo that controls fan speed. The construction feels very reliable. I checked the tubes for how well put together it was and if it would leak and couldn't see any corners cut on how it was built.

The instructions were actually very detailed, but it was very confusing on how to put it together regardless. Luckily, newegg's video on top of the instructions helped put things together after I fiddled with it for over an hour.

FYI - makes sure the plastic tabs that hold the screws in are turned the correct way, or it will not fit the motherboard's premade holes. That was my major hangup. Aside the lack of detail on that small hurdle, everything about the product is great. I trust Zalman as a brand altogether, especially for a good product that is quiet. I expect this would help with overclocking, but I'm choosing to stay stock settings to have it quieter and cooler for lower power consumption in my gaming rig.

Idle: 21c
Load: 32c


Asus Sabertooth
Intel 330 SSD
Corsair Vengeance 16gb 1866
SeaSonic 550w

1 out of 1 people found this review helpful. Did you? Yes No

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