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ZALMAN LQ-320 Water/Liquid CPU Cooler 120MM

  • 90 - 2000 RPM +/-10%
  • Fan Dim. 120 x 120 x 25mm
  • 4 Pin

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews


LQ Series
Blue LED Water Block
The blue LED not only provides a modded effect, but also allows user to check on the pump.
LQ Series
Built-in ultra quiet / high-efficiency water block minimizes tube connections and helps coolant to rotate quickly and stably.
LQ Series
Slim Water Block Design
Slim water block installs in ATX cases and Slim and LP (Low Profile) cases. (But only in cases that can accommodate a 120mm back fan.)
LQ Series
Micro Fins And Copper Base
High cooling performance with pure copper water block and inner pure copper micro fins for efficient heat transfer.
LQ Series
High Compatibility
Compatible with not only Intel newest socket LGA2011 but also supports LGA 1155, 1156, 1150, 1366; AMD sockets FM2, FM1, AM3+, AM3, AM2+, AM2; and most of the desktop CPU and APU sockets.
LQ Series
Zalman High Quality Design
Zalman unique hairline process covers the upgraded design.
LQ Series
High durability tube applied to ensure safety - no leaks even after long term use.
LQ Series
Minimized Noise, Maximized Performance
Ultra quiet 120mm fan and aluminum radiators are used to minimize noise and maximize cooling performance.
LQ Series
Dual Cooling Fan Can Be Installed
Install extra fans according to your needs. Optimize the cooling effects with dual fans.
LQ Series
No need to replace coolant. Easy installation and maintenance.
LQ Series
Eco-friendly, glycol-based coolant with corrosion inhibitor is added to prevent metal corrosion.
Cooling Process
LQ Series
Water Block & Pump Dimensions Ø65 x 32T
Materials Base: Pure Copper
Water Pump Enclosed Type
LED Color Blue
Weight(Water Block) 7oz (195g)
Connector 3-Pin
Radiator Dimensions (L x W x H) 6in. x 5in. x 2in. (153mm x 124mm x 52mm)
Materials Aluminum
Tube Length 300mm
Fan Dimensions (L x W x H) 4.75in. x 4.75in. x 1in. (120mm x 120mm x 25mm)
Speed 900 - 2,000RPM ± 10%
Bearing Long life bearing
Control Method PWM Control, Auto Restart
Connector 4-Pin
PWM Duty Cycle 30 - 100 ± 5%
Qmax 340W
Rated Voltage 12VDC
Weight 7.75lbs (810g)


Learn more about the Zalman Tech Co., Ltd LQ-320

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details

Customer Reviews of the Zalman Tech Co., Ltd LQ-320

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  • Anonymous
  • 7/30/2015 1:59:43 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year

2 out of 5 eggsWas A Big Fan of Zalman

Pros: Looks nice, Runs Quiet, and wasn't that expensive.

Cons: Allowed my CPU to fry while gaming as it did not cool my FM2 A10-5800K AMD CPU properly. Because of this my computer shut down frequently due to CPU overheating until it finally fried.

Other Thoughts: Zalman from my past experience use to make some really good fans for cooling a lot of which I bought for my VGA Cooling on my video cards which I was quite happy with. Perhaps I just lucked out & got a bad one who knows, but because of this experience I can promise you this much. I will never again by any liquid coolers. This was defiantly a one time only experience as I refuse to chance burning up a 2nd CPU. With the way mine cools I would have to go threw CPU's like a child goes threw candy, and I just cant afford that!

0 out of 4 people found this review helpful. Did you? Yes No

  • Kevin P.
  • 4/18/2015 12:15:11 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsWorks Great

Pros: Was fairly easy to install, works very well, my cpu ran around 60 deg C. under full load (overclocked), it now runs around 40 deg C. under full load (overclocked). My cpu now runs a couple deg cooler than the inside of my computer. The fan on the radiator doesn't have to run at full speed to keep cpu cool so it is much quieter than the stock cpu fan I had prior.

Cons: Instructions needed to be more in-depth. I know the old saying: "a picture is worth a thousand words" but would of been nice to have a description for each picture/ step of the installation.

Other Thoughts: I would recommend this to others who have the technical knowledge of removing their motherboard and other components.

Did you find this review helpful? Yes No

  • barry N.
  • 4/5/2015 12:11:48 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsWater Cooling for dummies

Pros: That sure runs cool...
The stock Athlon fan ran @ 43 -46 c,
Zalman @ 31 c.
It's very quiet.

Cons: This was my first water cooler installation and the directions were of little use. I had to remove and reinstall 4 times despite this I did manage to not put my fist through a wall.

After installed was complete I understood the directions perfectly.

Other Thoughts: If you live in south west where the temps are very high this is a good way to keep your CPU from throttling back.

I'm running dual fans one on each end of the radiator.

AMD FX 8320 8 core

ASRock 970 Extreme3 2.0

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

  • Anonymous
  • 2/5/2015 9:10:58 PM
  • Tech Level: High
  • Ownership: more than 1 year

5 out of 5 eggs3 years now retired

Pros: i bought this product 3 years ago and it has worked flawlessly cooling my overclocked amd 6 core at a consistent temp of less than 50 c very impressed

Cons: none

Did you find this review helpful? Yes No

  • aaron p.
  • 11/21/2014 11:26:15 AM
  • Tech Level: Low
  • Ownership: less than 1 day
  • Verified Owner

1 out of 5 eggsBeware of Conductive Fluid

Pros: Unknown

Cons: I confirmed with Zalman that the fluid is conductive, unlike some other fluids used in open or closed loop systems. It can and will short out components.

Manufacturer Response:

Dear valued customer,

We sincerely apologize for the issue. Please contact our customer service e-mail or via toll free number 1-888-925-6266 for further assistance.

Thank you.

Best regards,

Zalman USA Customer Service

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

  • aaron p.
  • 11/20/2014 9:39:33 PM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

1 out of 5 eggsGreat Until I Had No Computer

Pros: Unknown

Cons: The elbow joint connecting the hoses to the cooling block popped off while articulating the parts into place for installation. This is the 4th AIO CPU cooler I have owned and installed. I didn't do anything beyond the norm, just gently positioned hoses when it disconnected. I thought I reassembled the joint back into the block properly, but after being placed under load and engaging the pump for the first time, the block sprayed coolant all over the inside of my machine, including all over my GPU resulting in it burning out. I am still assessing all the damage, but I know at a minimum the GPU is fried out.

Other Thoughts: The idea behind water cooling is not to spray water all over your computer.

Manufacturer Response:

Dear valued customer,

We sincerely apologize for the issue. Please contact our customer service e-mail or via toll free number 1-888-925-6266 for further assistance.

Thank you.

Best regards,

Zalman USA Customer Service

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

  • Anthony W.
  • 8/15/2014 11:46:34 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsSo cool

Pros: Sleek, solid, quiet.
This cooler is great. Granted it's new but the overall quality is great. The components all appear solid. My build puts this cooler with an FX-8350 CPU and it's great. Under full load the CPU never peaks past 50c. Idle with no load can drop me down to 7c. All temps measured with CoreTemp.
The overall feel of this cooler is solid and quality. the instructions are a bit vague but not impossible to work with. The install is a breeze and once fully connected feels very sturdy. All parts are quality and I don't feel any of the included brackets or screws are subpar. Even with the fan at 100% it's volume is not horrendous. I would suggest a second fan added to the setup so you have push-pull airflow but the one fan does very well. I would recommended this cooler to anyone.

Cons: The only real con I have is that only one radiator fan is included. I think if a second was added it would be an even better value. Not enough of a con to remove an egg though.

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

  • richard i.
  • 2/4/2014 8:17:24 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsJust Great

Pros: Keeps my cpu nice and cool. easy setup. works as it should

Cons: None

Did you find this review helpful? Yes No

  • john w.
  • 1/23/2014 6:10:20 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsgreat

Pros: works great..fx 9370 o/c'd to 5.0ghz and runs cool enough. i added a pull fan. looks great with led.

Cons: -1 egg instructions were more for intel config and kinda hazy for amd. they should just make a short vid and link to it on newegg or at least on their site. but everything is included.

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

  • Eric J.
  • 1/17/2014 10:48:09 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsEasy, effective, all-in-one water cooling option

Pros: I bought this to cool an Intel i7-3930K hexacore running at 4GHz. This was my first foray into water cooling, and I am glad I started with one of these units rather than a larger set-up with an external cooling tower which would take up a lot more space. My CPU runs about 80F (26C) at idle or while doing basic business tasks (Word, browsing). Under full load, it has not exceeded 120F (49C) and very quickly brings temps down after full load.

I mounted the water block with the hoses on the side, and the radiator block with hoses on the bottom, after reading other reviews about the gurgling noise at startup, and I haven't had a single gurgle. The radiator block is large and with the push-pull fan setup, it just barely has clearance for my outermost DIMM slots in an Antec P280 case with an ASUS Rampage IV Gene mobo. The stack of fan-radiator-fan will protrude deeply into your case, so plan accordingly if your DIMM slots are there.

The rubber hoses and connectors seem well made, I have had zero issues with leakage, and if memory serves, the block doesn't use water, but another coolant, which is reassuring.

Cons: The fans on the radiator are too loud. I hate fan noise and I was aiming for a whisper-quiet rig, which was one reason I chose an all-in-one water unit to cool the hexacore CPU. (Another reason was not wanting to fasten a 50 pound heatsink to the CPU.)

I replaced the radiator fan between the case wall and radiator with a Noctua NF-P12, and this was an improvement. The inner fan, which mounts to the other side of the radiator block, has cut-away screw holes for mounting, so unless you can hack off the corners of a replacement fan or find extra-long screws, you're stuck with it. It is by far the loudest fan in my six-fan case. The other fans are Noctuas and the two stock Antec fans provided for the top vents on the Antec P280, which are barely audible. With fan controller software, I can cut the RPMs down to an acceptable but not perfect level except when CPU runs at full load, when the only fan I hear is the Zalman. If you are a quiet freak, this might displease you, but otherwise, the fan noise probably won't bother you, and you can minimize it. Also, the fan has gotten a little quieter after the first week's "break-in" period. During the first week, the fan had a distinct high-pitched "scratchy" sound, which I assume was some bearing or cuff wearing in.

As others have noted, the instruction sheet is poorly written. Read it carefully before installing the CPU mounting frame, and play with the pieces first before attempting to fasten it to your board. After reading the reviews here, and the sheet carefully, I still goofed up the mounting pin placement, but since I checked alignment BEFORE pushing the pins down and inserting them all the way, this was easily fixed. I highly recommend double-checking that all the pins are lined up before pressing them down to mount the water block to the CPU. Otherwise, removal might be a pain.

Very minor, but I removed the stock cooling compound on the water block, which only covered about two-thirds of the copper surface and was a rather thick clay-like pad. I used Arctic Silver CMQ2 Ceramique to coat the entire copper surface to maximize contact to the CPU metal shield.

Other Thoughts: The light on the water block looks cool.

It's so effective at bringing the temp down quickly, I actually worry about the thermal stress on the chip material, but I have no idea if this is an issue. My CPU temp drops from 120F (49C) to 80F (26C) in about two seconds when going from full load to no load. This unit provides a TON of cooling power for my needs.

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

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