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ZALMAN CNPS9900ALED 120mm 2 Ball Low-noise Blue LED CPU Cooler

  • with RC33P 800rpm ~ 1,300rpm +/- 10%
  • without RC33P 1,000rpm ~ 2,000rpm +/- 10%
  • Pure Copper
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
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Long popular for the design and engineering of their products, Zalman continues to deliver on their tradition by producing quality products backed with excellent service. The CNPS9900LED goes a step further by looking good as it cools your AMD or Intel processor.

The efficient dual copper heatsink design combines a 3-pipe system that effortlessly whisks heat away with the help of the 120mm blue LED fan’s blades and 2 ball bearings. Noise level can be lessened automatically by using the integrated PWM functionality which lets the BIOS monitor fan performance and thermal need and adjust the fan's speed accordingly.

The CNPS9900LED is compatible with all single- and multi-core CPUs for Intel's Socket 775/1156/1366 and AMD’s Socket AM3/AM2+/AM2/754/939/940. All the clips and backplates are included so there's nothing else to buy to get the unit attached to your motherboard in minutes.

  • newegg Pure Copper Heatsink Base and Fins A pure copper base and circular heatsink formed by radially aligned ultra-thin (0.2mm) copper fins maximize heat dissipation surface area for excellent cooling performance.
  • newegg High-efficient Heatpipe Design The innovative heatpipe design delivers a heat transfer capacity equivalent to 6 heatpipes with just 3.
  • newegg 120mm Cooling Fan with PWM Function The 120mm cooling fan with PWM function automatically adjusts speeds according to the CPU temperature for the optimum balance between cooling performance and noise level.
  • newegg Universal Socket Compatibility As an all-in-one solution for PC systems, the ZALMAN CNPS9900A LED features broad compatibility with all AMD socket AM2, 754, 939, 940 and Intel 775, 1156 and 1366 platforms.

Learn more about the Zalman Tech Co., Ltd CNPS9900ALED




Fan & Heatsinks
Fan Size
Socket AM2 / AM2+ / AM3 / AM3+ / FM1

Intel LGA 1150 / LGA 775 / LGA 1155 / LGA 1156 / LGA 1366
Bearing Type
2 Ball
with RC33P 800rpm ~ 1,300rpm +/- 10%

without RC33P 1,000rpm ~ 2,000rpm +/- 10%
Noise Level
with RC33P 18dBA ~ 28.5dBA +/- 10%

without RC33P 19.5dBA ~ 38.0dBA +/- 10%
Power Connector
4-Pin Connector (PWM Control, Auto Restart)
Heatsink Material
Pure Copper

Physical Spec

Heatsink Dimensions
94(L) x 131(W) x 152(H) mm

Manufacturer Warranty

1 year limited
1 year limited

Quick Info


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

Customer Reviews of the Zalman Tech Co., Ltd CNPS9900ALED

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  • James F.
  • 12/24/2014 2:00:29 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

2 out of 5 eggsRattle

Pros: Looks really nice and temps are ok

Cons: Rattles after a year, the sound is really irritating, Installation will make you wanna break something--its sooo frustrating.

Other Thoughts: I'll never go air cooled again. Water blocks mount soo superbly and keep the processor soo cool.

Did you find this review helpful? Yes No

  • Anonymous
  • 12/19/2014 9:42:55 AM
  • Tech Level: Somewhat High
  • Ownership: less than 1 day

5 out of 5 eggsThings to Remember

Pros: see other thoughts

Cons: see other thoughts

Other Thoughts: You must remember that every fan or cpu cooler will have a drawback other wise there would never be a competing brand and you wouldnt be searching.
However i would like to mention that this fan is great because of its shear size and copper material. Copper is probably the most thermally conductive fan material out there. A circle of fins is more efficient then a block.

Did you find this review helpful? Yes No

  • Edward K.
  • 12/17/2014 12:45:39 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsNo problem

Pros: Looks neat. Big. Works as advertised. Fits 1150 sockets, even though they are not listed on the package; uses the same holes as the 1155/1156. No memory or case clearance issues on an ASRock Fatal!ty Killer Z97 in an Antec 300 case. Installed over a 4790K processor, not that that matters.

Others have reported that the brackets and screws didn't fit properly, but I had no problems with it.

Cons: As other have pointed out, it can be a little tough to install. Specifically, it's a bit tricky to get the screws lined up and started.

Other Thoughts: This was my first install of an aftermarket cooler. I elected not to use the optional adhesive pad to hold the backing plate to the motherboard. Instead, I hung the case half off my desk so that I could hold the backing plate in place with my hand while aligning the screws with my other hand.

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

  • Anonymous
  • 12/15/2014 6:42:15 AM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsWow! Works Great!

Pros: Great CPU temperature drop. Even though I installed it backwards (facepalm).

Cons: Installation was a bit of a pain. I ended up installing it backwards (derp).

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

  • Thomas N.
  • 12/13/2014 10:23:00 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

1 out of 5 eggsFailed on 1150 Socket - i7 4790K

Pros: Contact plate, pipes and fins are made of copper. Nice packaging.

Cons: The screws were not long enough to reach the corresponding nuts below. I had to bend the bracing arms with pliers then force them down with special clamming tools. It was really hard to keep the this huge unit from sliding all over the CPU while trying to clam it in place, which in turn caused the thermal paste to spill over to the edges.

Other Thoughts: What a mess. I wasted two and half hours to install this thing. I should have stuck with Cooler Master. If you don't have the patience and special clamming tools, stay away from this product.

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

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  • Keith L.
  • 12/10/2014 5:28:36 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsSocket 1150

Pros: Works with Socket 1150. I see some reviews here that say it doesn't work with socket 1150. It does. Also I see references to bent backplates and too-short screws. I know exactly what these people were doing wrong and why. I was puzzled myself at first.

Cons: The instruction manual illustrations and explanations can be difficult to understand.

Other Thoughts: The manner of the screws' attachment to the backplate isn't absolutely clear unless you study the illustrations carefully. The screws are inserted into the backplate holes appropriate to the socket, dropped into the channels and then trapped there by plastic caps. The channel sides prevent the hex-head screws from turning and the caps prevent them from escaping. Persons who thought the screws were too short didn't understand this arrangement. Those who bent the backplate to make it fit also had it wrong and probably had the backplate upside-down.

The hardware DOES work as intended.

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

  • Keith L.
  • 12/10/2014 1:11:11 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsExcellent

Pros: Short of water cooling, this and the other similar Zalman coolers have proven themselves among the very best. Easy to install, high performance, utterly reliable. Copper FTW.

Cons: None

Other Thoughts: This cooler is serving for the short-to-medium term in a new high-powered box with an i7-4790K CPU. I've started with a more modest setup in order to stay within budget. Later on I'll beef it up with high-end graphics and a water cooler, and try my hand at overclocking. Meantime the CNPS9900ALED is doing a great job. It has easily kept the CPU cool under every load I've given it, including some CPU-intensive video conversions and a bit of gaming.

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

  • Richard O.
  • 12/10/2014 11:12:33 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

2 out of 5 eggsMixed Review

Pros: Cools well and is quiet.

Narrow enough to allow four DDR3 DIMMs with heat fins on Asus M5A99FX PRO R2.0 motherboard. This is a big plus!

Cons: The Zalman package should have contained three sets of mounting screws for various motherboard types. My package contained two sets.

With the AM3+ CPU socket, the screws provided were about 5/16" too short.

Ended up buying four screws (6-32 x 3/4"), four washers, and used the original mounting plate provided by the Asus motherboard. Bought allen head screws so they could be tightened from an angle.

Mounting plate provided by Zalman is flimsy, plus lack of mounting screws made this a no go.

The fan itself is not mounted evenly between the cooling fins. It looks tilted, unsymmetric.

Other Thoughts: It would be nice to just use the mounting plates provided by the motherboard manufacturer. These seem solid and well insulated from the motherboard.

The generic mounting plates provided by Zalman and others are flimsy, ugly and more painful to mount.

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

  • Sandra R.
  • 12/8/2014 8:33:02 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

3 out of 5 eggsDuno

Pros: the cpu runs very cool even with the included thermal grease

Cons: it is actually quite weird to work with it.
it was very unconfortable to install on the board and i couldn't even find a way to install it with the back plate.
Also i noticed that i did not get one pack of screws

Other Thoughts: i gave it a 3 and not a 2 because the cpu runs really cool with it.

Did you find this review helpful? Yes No

  • Gregory K.
  • 12/5/2014 10:53:14 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsNice for AMD and Intel heaters

Pros: I've now had this cooler installed on an AMD 7850 (Asus X88M Plus Mobo) and Intel 4690K (Asus Z97-A Mobo). It included brackets and hardware to fit both sockets. The fan is easily set up for control with the motherboard or AI Suite 3. Very secure mounting using supplied bracket/backplate on both platforms. I use a Lian Li V1200B case which has the mobo flip-flopped and utilizes 2 case fans, 1 in the front 1 out back.

I overclocked the AMD to 4.4G and gamed that way with no issues. Idled at 27C, got to 60C stressing with OCCT and passed the 1 hr test, no problem. It would peak at 50C during gaming. (Elite: Dangerous and Star Citizen) The stock cooler was in the 80's under load with no overclock (3.7G).

I've seen 5.2G with the Intel during Asus TPU autotune. Not stable. It is stable at 5G, incredibly. Idles at 28C and hits 58C during OCCT testing.

Cons: Tedious to mount. I was able to remove it from the AMD mobo while still mounted in the case, but it was not easy. I ended up having to bend the ears of the AMD brackets down with pliers a little bit to allow the screws to engage. Even then I was applying a lot of pressure with that skinny allen wrench they include. I haven't had to remove it from the Intel system yet however, I believe it would be very difficult to do so without removing the mobo from the case. I installed while the mobo was out of the case.

Other Thoughts: I would recommend this cooler to someone with patience and some previous experience building customized computers. It is quite effective at air cooling compared to the stock coolers provided with the cpu's I described above. Particularly the all aluminum AMD cooler. What a joke!

Did you find this review helpful? Yes No

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