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ZALMAN CNPS9500 AT 2 Ball CPU Cooling Fan/Heatsink

  • 1300±30%-2650±10% RPM
  • Bearing Type: 2 Ball
  • Intel LGA 775 / 1155* / 1156* / 1150
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
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For the PC-enthusiast who wants a desktop that looks sizzling hot, yet stays remarkably cool, check out the Zalman CNP9500 AT CPU Cooler featuring a fan and heatsink! This hi-tech cooling device lends a rich, bright look to your PC with its flashy heatsink and frame, durably crafted out of pure copper.

The heatsink saves space with an architecturally sound 3-pipe system that effortlessly whisks heat away with the help of the automatic fan’s 92mm blades and 2 ball bearings. Controlling the fan is a PWM chip, which automatically adjusts the fan’s speed based on CPU temperature. It operates at a stealthy 18.0 dB at 1300 RPM and quietly revs to 27.5 dB at 2650 RPM during heated PC action.

  • newegg PWM Control Fan A low-noise 92mm PWM Control fan automatically controls fan speeds ranging from 1,300rpm to 2650rpm for silent cooling in relation to CPU temperatures.
  • newegg Unique Heatpipe Design Three innovative and curved heatpipes provide a heat capacity matching up to six heatpipes for maximized heat transfer.
  • newegg Optimized Heatsink Layout and Ultra-Slim Fins A 100% copper heatsink with an aerodynamically optimized "tunnel" design and 0.2mm ultra-slim fins maximize heatsink efficiency with minimal weight and smoother airflow for optimum cooling.
  • newegg Intel Platform Compatible Compatible with the Intel LGA 775/1155/1156 platforms, the Zalman CNPS9500 AT provides an ideal cooling solution for Intel Pentium 4, Celeron D, Pentium D, Core 2 Duo, Core 2 Quad, Core 2 Extreme, and Core i7, Core i5, Core i3 processors.

Learn more about the Zalman Tech Co., Ltd CNPS9500 AT




Fan & Heatsinks
Intel LGA 775 / 1155* / 1156* / 1150

Note*: Customers that purchased coolers before the inclusion of support for socket 1155/1156, can purchase the separately sold ZM-CS5A or ZM-CS5B mounting kit for installation onto socket 1155/1156. The mounting kit ZM-CS4A can be purchased separately for installation onto socket 1366.
Bearing Type
2 Ball
1300+/-30%-2650+/-10% RPM
Noise Level
18.0+/-10%-27.5+/-10% dBA
Heatsink Material

Physical Spec

Heatsink Dimensions
Overall Dimension: 85 x 112 x 125mm


Compatible with Intel's Dual Core Pentium, Pentium4, and Celeron D for Socket 775.

Low-noise 92mm PWM Control fan for automatic control of the fan's RPM according to CPU

Optimized heatsink layout composed of pure copper for maximum heatsink efficiency.

Innovative, curved heatpipe design for a heat transfer capacity of up to six heatpipes
with just three.

0.2mm ultra-slim fins for minimized weight and reduced airflow resistance.

Maintains minimum RPM even when Duty signal supplied by M/B is below 30%.

Operates in silence by preventing extreme RPM during initial booting.
CPU support: Pentium 4, Celeron D, Pentium D, Core 2 Duo, Core 2 Quad, Core 2 Extreme, Core i7, Core i5, Core i3

Note(1): Customers that purchased coolers before the inclusion of support for socket 1156, can purchase the separately sold ZM-CS5A or ZM-CS5B mounting kit for installation onto socket 1156.
Note(2): The mounting kit ZM-CS4A can be purchased separately for installation onto socket 1366.

Package Contents

Package Contents
Thermal Grease
Clip (S-Type)
Bolts (for installing cooler)
Clip Support Fixing Bolts for Socket 775
Clip Support for Socket 775

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 CNPS9500 AT

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  • Landon C.
  • 11/21/2014 9:52:21 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsIm a fan of this fan.

Pros: Fairly easy to install. Runs quiet for the most part. I run a 4770K at 4.0Ghz and running Boinc projects fulltime it never gets over 70c.

Cons: I guess you could cut yourself if your not careful installing it or lose a part. The washers are very tiny but that's all I can complain about.

Other Thoughts: The Cooler Master heatsink and fan nowhere near as good as this fan.

Did you find this review helpful? Yes No

  • Tyler B.
  • 11/21/2014 2:07:00 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsGood fan, could need some more quality assurance

Pros: The little time I had it was awesome, went from a stock cooler where Overclock temps were around 60C to this, which brought the Overclock temp down to around 25C when combined with Arctic Carbon MX-2.

Cons: The fan rattled *a lot* so I removed the heat sink. Right after I removed it a screw fell out of the back of the bracket attaching the fan and motor to the heat sink. I looked through the central hole and saw that the screw mount had somehow been stripped out. this is probably a one in a million chance so I wouldn't worry about others having it too often.

Did you find this review helpful? Yes No

  • Richard G.
  • 11/16/2014 7:48:15 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsStill Working

Pros: I have this guy in two of my systems. One for about 5 years and the other 3 years. Works great. Keeps my CPUs at good temps.

Cons: None.

Did you find this review helpful? Yes No

  • Damien L.
  • 11/8/2014 11:43:25 AM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

1 out of 5 eggs

Pros: Shiny

Cons: DOA. Fan was dead.

Other Thoughts: Zalman is usually my preferred CPU cooling solution. Of course I realize sooner or later I was going to get a dead one.

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

  • Yilun D.
  • 11/2/2014 6:33:45 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsexcellent heatsink fan

Pros: I have i7-4790K CPU and the CNPS9500 AT provides excellent cooling. Running at 4.0 GHz stock speed, idle temperature is generally at 20-23 degrees, and 100% cpu load on 8 threads generates no more than 58 degrees.

Cons: The installation is not the easiest compared to couple of other HSF I've used in the past (e.g. Cooler Master Evo).

You must have access to the back of the mobo in order to insert 4 of the nuts for the socket mount to be installed on from the front side.

The S clip which lies on the CPU will need to be pressed down hard in order to screw onto the socket mount (no need to be worry, it is meant to be bent-resistant). I made the mistake of screwing too hard on the S clip in order to keep it down; the plastic on mount's screw hole loosened causing the screw to pop out (happened to couple of other reviewers for this product as well). Luckily, the S clip only requires 2 screws, so I rotated the socket mount 90 degrees and securely installed it the second time.

I have also contact ZALMAN's website regarding the issue and they have sent the replacement parts immediately. Excellent customer service.

Other Thoughts: I definitely recommend this product, as it provides excellent cooling temperature and air flow. Just make sure that after installing on your mobo, it will not hinder other hardware placement (e.g. RAM slots). Luckily, this was not the case for me, but it came close to the DIMM slots.

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

  • HAZEM N.
  • 10/14/2014 4:37:34 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsWorth it

Pros: Made a big difference in my i7 4790 temps, My study have an ambient temp of 25-27c my i7 used to idle around 32-37 and under 70%-80% load will go up to 81-82c. That Zalman took my idle temps down to 25-28c and my load temps to around 49-55c. I tested an H80i sealed water cooling system that my friend had after upgrading and it barely beat the Zalman by 1c on the low end and 2c on the high end.

Cons: None so far.

Other Thoughts: Depending on the orientation of the heat sink, it may block the first memory slots; which I didn't consider a con since I knew the dimensions of the item. On my Asus z-97 I had to rotate it 90 degrees from the recommended position because it was too close to row of capacitors and I had to stretch the connector to reach my CPU fan header that resulted in blocking the first memory slot. I'm very sure that my heat sink orientation actually may caused the heat sink to under perform since it's pulling air off the graphic card versus pulling cooler air from the front as per recommended orientation. It is worth mentioning that I have an 80mm side intake fan blowing air right on top of the heatsink to counter the fact that the heatsink fan is pulling warmer air of the top of the graphic card.

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

  • Gerald N.
  • 10/10/2014 1:16:43 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsLoad temps dropped 25-30c on i7 2600K

Pros: In an Antec p180 case (4 fans), load temps dropped about 25-30 degrees c, from 75-80 on stock cooler, to 48-53 on this Zalman. (for an i7 2600K, stock speed). Installation was easy.

Cons: None really.

Other Thoughts: It's somewhat large and that may be an issue in smaller cases. Has to be installed from back of motherboard. If case has no rear motherboard access, you'll have to remove motherboard to install this. (as usual)

Did you find this review helpful? Yes No

  • Jan I.
  • 9/6/2014 11:39:17 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsGreat value, great cooler

Pros: Excellent cooling, especially for the price - perfect for my media computer. Should be great for most applications may be except major gamers. I have i7-4790 Haswell cpu but using built in HD4600 graphic card. This is media computer (TV, movies, etc.) not gaming computer... Lot of raw cpu power, 4 hard drives, but not much of GPU. No need for the one HD TV connected :-)

I got this since it was on sale and $20 rebate took it down to ~$20 total price. My "stock" heatsink on i7-4790 was letting the cpu go well over 70C (I saw over 80C peaks...) when loaded. This thing tops around 52C at full load. Major improvement. I was going to spend $60 for liquid cooling, but this is safer (no liquid), much cheaper, and probably as good. This seems reasonably quiet - even though that is not major issue for me. This rig is well cooled box (3 x 120mm fan in the box) so there is plenty of air inside for this thing to work with.

Cons: This is huge - make sure you have full size box and space inside. It is pain to mount - you have to remove motherboard most likely. Even with access from the bottom I was unable to get to the right screw holes with my fingers. It is simply beast and takes up space. I am sure upgrading the system will not be any fun, but that is not my plan now anyway.

Other Thoughts: I am actually surprised by the difference between the included Intel "stock" cooling and this. Seems the stock is simply joke. Come on, Intel, I topped 80C peak temperatures - without any overclocking and inside really perfectly cooled box. That makes simply no sense to let the thing go that high.

Did you find this review helpful? Yes No

  • Gerald K.
  • 9/1/2014 10:22:46 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsReally nice fan

Pros: I like a lot of things about this fan. The copper heatsink looks nice and does a better job drawing out heat than aluminum sinks. It keeps its length and width dimensions roughly the same as the intel OEM fan so there shouldn't be major issues with installation, just make sure your computer is deep enough as the fan sticks out significantly towards the side wall of the case. One thing I really like is that (unlike many aftermarket and all OEM fans) the design blows a column of air directly to the rear exhaust fan rather than to the case sidewall where it will hit the side and disperse among your other components.

Cons: Kind of a pain to install with the bracket and the tension bar and the underside nuts, but not too bad. Read the directions closely. Took about 20 minutes (cpu install, thermal paste, mounting, etc) and went fine.

Other Thoughts: Runs at 1450-1500 rpms and keeps my 3.4 ghz i5 at 30 Celsius under significant load. Reviews that say the fan runs loud or at max RPMs are probably seeing the result of other heat management issues.

Because it blows to the back of the case instead of to the side of the case, it is possible to install this in the wrong direction. Read the diagram in the manual to point it properly straight at the rear exhaust fan.

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  • Gerald K.
  • 8/30/2014 11:47:32 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsNice cooling

Pros: The giant copper heatsink keeps the fan at 1500 rpms under a load and it looks cool too. You would be hard pressed to find another heatsink this large that fits as well. Its bloat is outward rather than up/down/left/right, so it doesn't really interfere with giant video cards just below it. Also, as opposed to OEM fans (and many aftermarket), it blows heat back towards the exhaust fan. I like this because it is not sending heat to overheat something else, it is sending heat to the fan that blows heat out of the box. Make sure your case has enough depth for it to fit.

Cons: A pain to install but less of a pain than aftermarket fans that don't fit.

Other Thoughts: Under load, my CPU is a chilly 30 degrees C and the fan runs quietly at 1500 rpms. Other reviews where the fan is running at max RPMs and loud probably did something wrong in the installation.

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