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ZALMAN FX70 Fanless CPU Cooler

  • High performance Fanless design
  • Twist heatsink structure for more cooling capacity
  • 6 heatpipe Black-pearl nickel plated
  • Additional optional fans may be installed for increased performance.

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

The new FX70 CPU cooler is designed to provide the maximum cooling performance. It features a Twist heatsink structure, boasts six beefy heatpipes, and even allows you to install extra low-noise fans (sold separately) at the front or back. Thanks to the fanless design, this durable unit is the perfect cooling solution at places where noise, dust, and vibration can be detrimental to the system and its surrounding areas. Additionally, it works with most CPU sockets.

detailed view and application

  • newegg Unmatched cooling performance The twist fin design maximizes natural convection through continuous stirring of the airflow. Up to six heatpipes provide optimized heat transfer performance. Plus, the high performance Thermal Grease (ZM-STG2M) also helps maximize adhesion and cooling performance.
  • newegg Mount extra fan This unit is able to add optional low-noise fans at the front or back. And, fan clips are provided for only one fan mounting.
  • newegg High durability The high-performance fanless design minimizes factors that influence the damage of electronics, such as vibration and dust, to extend its lifespan. The heatsinks have black pearl nickel-plating for enhanced corrosion resistance and a luxurious image.
  • newegg Wide compatibility The FX70 fits in an ATX mid tower case (width 180mm) and is compatible with most CPU sockets, including Socket 1150, Socket FM2, Socket AM2+/AM2, Socket AM3+/AM3, Socket FM1, Socket 775, Socket 1156, Socket 1366, Socket 1155 and Socket 2011. (Please apply optional fans for CPUs generating heat over 95W.)

Learn more about the Zalman Tech Co., Ltd FX70

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 FX70

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  • bradley b.
  • 9/22/2015 2:38:01 AM
  • Tech Level: Average
  • Ownership: 1 day to 1 week

4 out of 5 eggspretty good

Pros: really keeps it very cool and its a perfect size to not block off ram slots and pcie slots.

Cons: they forgot to put in the fan. i didn't feel like returning it and waiting so i just bought a 120mm fan. it is frustrating to put together

Other Thoughts: its doing good i just got his cheap one maybe get a water cooler if i wanna overclock more

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

  • Anonymous
  • 6/22/2015 4:49:40 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week

5 out of 5 eggsImpressed

Pros: Looks pretty, good price, I used in a Deep Cool Smarter mATX case for cooling i5 4590 with tho case fans at 565 RPM (intake and exhaust) keeps 26-30 idle light load and 55-60 and 100 percent load, I've set my fans to spin up only when temperature reaches 55 degrees. So the fans pretty much never spin up, Exhaust fan is really close to the heatsink.

Cons: For similar price you could get a big cooler with a fan, which probably would'nt be loud to, Heatsink is quite big make sure you have the space, fins inside appears to be coated in some kind of dust, tried to wash of, didn't come of.

Other Thoughts: Good Heatsink overall, woirks really well on a haswell refresh i5 at 3,3 -3,5 GHZ

Did you find this review helpful? Yes No

  • Justin M.
  • 6/16/2015 11:16:45 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsAmazing!

Pros: Idle temps are about 21-22 degrees C, with a 200mm intake fan and a 140mm rear fan - none attached to the heatsink - both fans about 500rpm.

The price is cheaper than almost any other cooler including a fan, and your temps will be lower too! My thought process is: a fanless heatsink with a fan is going to be cooler than a heatsink designed for a fan.

Cons: None really. Maybe the size, but it doesn't cause any problems. The installation (like all CPU coolers) was a pain to get right, but the instructions are clear enough. Pro tip: put less than the whole packet of thermal grease, you only need a dime-sized circle in the middle.

Other Thoughts: It's huge!. The back of my graphics card is about half a centimeter away from the heatsink, and the top of my RAM (GSkill Sniper Series) has about 1-2cm of clearance. My case (Thermaltake V21) had more than enough vertical space to accommodate this cooler, but make sure you know the dimensions before you buy, just in case.

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

  • bradley b.
  • 6/8/2015 5:36:38 PM
  • Tech Level: Low
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggs

Pros: very good construction and feel as well as being exceptionally light for its size. Has no problem in my case whatsoever.

Cons: GSkill Ripjaws barely fit under it so anything like Corsair Vengeance will be out of the question in terms of stuffing ram under this bad boy. Ram in at least the first two slots must be installed before the cooler is installed and the manual is awful.

Other Thoughts: Suggested product due to the TDP it covers so long as you know how to plan case airflow. This cooler seems to like it when air needs to be forced past it and provided your case only has one fan in and one fan out it seems to cool better with a slightly negative case pressure.

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

  • Jason N.
  • 2/13/2015 3:28:57 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsWorks great.Horrible instructions.

Pros: Works very well, without only two case fans the temps stay under 50C.

Cons: The instructions are very poorly written. They work, and if you've (recently) installed similar items you won't have problems. If not, you'll need to read the instructions slowly and carefully to ensure no mistakes.

Other Thoughts: Requires motherboard removal to attach the rear plate (unless your case has access to the back of the cpu plate).

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

  • Jonathan Z.
  • 2/8/2015 8:52:23 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year

5 out of 5 eggsZalman FX70 Amazing Performance

Pros: Features:
Solid quality construction
Six Heat-Pipes
Cools off sufficiently just by passing by air drawn by near by case fans
Dropped Temps (Stock 48C idle - 78C Load) to (FX70 29C idle - 48-53C Load)

Loved this heatsink, best one I've ever purchased besides my old monsoon.

Liked it so much made a few of my friends buy it and used it in my boss's rig that he had me build for him. They all love it.

If your hesitating and you have enough room and the spare change for this thing JUST BUY IT.

Cons: Instructions could definitely use work, they specify and point key positions of how the unit assembles and fail to make it easily visible what they are straining so much about.

It's not a killer but the first time I assembled it I had fun checking my work over thirty times because some things were a little harder than expected to install.

Screwing down the heatsink was difficult. Perhaps I overlooked something but three other of my friends that purchased this heatsink after my recommendation told me the same story, instructions were lacking installation and actually mounting the unit was a bit difficult.

In the End still totally work any slight inconvenience.


However this heatsink did fit in a compact mid tower OEM by gateway. No problems at all.

Other Thoughts: ASRock FM2+
A10 6800k @ 5.1GHz CPUz verified
8GB AMD DDR3 1866MHz
Windows 81

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

  • Kyung K.
  • 1/16/2015 4:38:41 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsAwesome CPU cooler

Pros: This Zalman FX70 could be the best CPU cooler I have ever owned so far without mentioning the quietest one. With a promotion code and mail rebate, it was a good price to purchase. The average temperature on idle phases is 2 C lower than before, although the temperature when CPU is running is slightly higher than a stock cooler.

Cons: The size of this cooler is huge. The height is 158mm and it doesn't fit on my mid tower case. I have to take away a side panel and put on the customized one to fit it on. Also, if you are using your computer overclocked with heavy usage, I would recommend to put a PMW cooling fan.

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

  • Lars H.
  • 1/2/2015 3:33:31 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsSilent, Large, and Effective

Pros: Perfectly silent, and seems to cool my 6-core AMD FX-3600 effectively.

Cons: Hard to install on AMD sockets. The heat sink is large enough that I had to bend two of the fins so that I could fit it over the RAM.

Other Thoughts: I have installed it in a midsize ATX computer case. I don't think it would fit in anything smaller.

You may want to set up your rear case fan to respond to CPU temperature. In the absence of an additional fan, the rear case fan essentially acts as the "CPU fan" for this heatsink.

5 out of 5 people found this review helpful. Did you? Yes No

  • Grant N.
  • 8/19/2014 8:04:31 PM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsGreat Cooling Solution

Pros: Easy Install; No moving parts; Looks great; Works with smaller-end mid-size ATX cases; Great design and functionality and it's very inexpensive. The optional fan setup is great because you can customize as needed

Cons: Not really a con; but be aware of size/dimensions; should work with most setups but may be too big for micro atx or compact cases; in some setups it may impact memory install, but on my Asus z97 pro there was no issue, even with fan installed (optional)

Other Thoughts: Great alternative to complex cooling systems that may not last as long

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

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