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Item#: N82E16811119233

Cooler Master HAF 912 - High Air Flow Mid Tower Computer Case

  • SECC/ ABS Plastic ATX Mid Tower
  • 2 x USB 2.0, 1 x Audio, 1 x Speakers Front Ports
  • 2 x 120 mm fans, 1200 RPM, 17 dBA
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Cooler Master HAF 912 Mid Tower Chassis

Cooler Master’s HAF 912 further enriches the HAF series by adding a compact, yet fully featured mid-tower solution for enthusiasts and budget conscious gamers alike. Its seemingly small exterior supports a plethora of interior features such as twelve devices and high end GPU cards.

The HAF 912 embodies the rugged aesthetic and qualities of its brethren while remaining attractively priced. Its traits more closely resemble that of a mid to high-end case than that of other cases in its price range. The HAF 912 pays tribute to the legacy of HAF 932 & HAF 922 in ease of installation, high airflow, and compatibility with water cooling hardware.

HAF 912 is the most compact solution in the HAF Series that still provides full desktop tower component support.
The HDD cage can be easily removed to accommodate long high-end graphics cards. Rotate the cage 90 degrees to adjust your system airflow and cable management setup as you need.

Technical Specs:

Model RC-912-KKN1
Color Black
Dimension 230 x 480 x 496 mm / 9.1 x 18.9 x 19.5 inches
Weight 17.8 lbs
Material SECC / ABS Plastic
5.25" Drive Bay 4 Exposed
3.5" Drive Bay 1 Exposed (converted from 5.25" bay) 6 hidden
2.5" Drive Bay 2+2 (converted from 5.25" bay) 4 hidden
I/O Panel USB 2.0 x 2, Audio x 1, Speaker x 1
Cooling System Front: 120 mm fan x 2, 1200 RPM, 17 dBA(one is optional,can be swapped for one 200mm fan)

Top: 120 mm fan x 2 or 200mm fan x 1(optional)

Rear: 120 mm fan x 1, 1200 RPM, 17 dBA

Side: 120/140 mm fan x 1 (optional)
Expansion Slots 7+1
Power Supply ATX PS2 / EPS 12V (optional)
Warranty 2 Years
UPC Code 884102009877


  • newegg Superior Expandability and Expansive Space The Cooler Master HAF 912 boasts 4 exposed 5.25", 1 exposed (converted from 5.25" bay) and 6 hidden 3.5", 2+2 2.5" / 1.8" HDD/SSDs drive bays (via the 3.5’’ to 2.5’’ adapter) as well as 7+1 PCI expansion slots for increased expandability. 3.5’’ HDD cage can be rotated 90 degree or removed to fit long graphics cards. The bottom mounted 2.5-inch drive cage can also be mounted on top of the bottom half of the 3.5-inch drive cage if more room is needed at the bottom of the case.
  • newegg Excellent Cooling Solution – 200mm Megaflow Fans and Water Cooling Support The Cooler Master HAF 912 features one front and one rear 120mm fans and support another front 120mm (two front fans can be swapped for one 200 mm fan), one side 120/140mm and two top 120mm ( or one top 200mm ) fans for peerless air cooling performance. The HAF 912 also has pre-drilled outlets and retaining holes, and accepts two external radiator 120mm fans for building water cooling system.
  • newegg Flexible Cable Management The 16mm width between side panel and motherboard tray provides sufficient space for hiding cables. HDD cages with holes allow easy cable routing while modular notches tie cables neatly, leading to better internal airflow.
  • newegg CPU Retaining Hole and Removable Dust Filters CPU retaining hole allows easy heatsink installation and removal. The dust filters on the bottom and front cover block dust outside of the enclosure and is removable for easy cleaning.
  • newegg Support for Long Graphics Card The Cooler Master HAF 912 supports high-end graphics cards like ATI HD 5970 and NVIDIA GeForce GTX480 after the removal of the 3.5’’ HDD cage.
  • newegg Convenient Front I/O Panel and Top Platform Convenient front I/O panel offers easy access to two USB 2.0 and two audio ports. Top platform provides room for your personal belongings, like your cellphone or keys.

Learn more about the Cooler Master RC-912-KKN1

Quick Info


  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years

Customer Reviews of the Cooler Master RC-912-KKN1

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  • Emily Y.
  • 10/18/2014 3:14:30 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

2 out of 5 eggsMore of the same

Pros: The case is wonderfully designed and was very easy to use (exceptions below). The interior is roomy, and there is enough drive bays for anything you can possibly imagine.

The air circulation in the case is outstanding. If you plan on overclocking and using aftermarket cooling solutions, this case is for you.

Cons: Nice case for the money over all. There are a few issues with it, that must be addressed. My main "beef" with the case is the quality of fans provided. Within ONE DAY the front case fan started making ticking noises. The sound is considerable, and distracting. This will be the second HAF case with this type of problem. (my 1st being the 932) The front of the case will only accept 120MM fans. This is just a bad design, as all COOLERMASTER really needs to do is punch a few holes in the sheet metal. -1egg for faulty fan. (sounds like a card in bicycle spokes. checked it for clearance, the noise is coming from within the housing itself, not from the blades)

I will never buy a coolermaster fan because of this flaw. >ever<.

The perforations all over the case lead to structural issues, and the case is prone to warping.

Finally, the interior SSD bay is a piece of junk. It does not even line up with the holes drilled for it, and looks like someone stepped on it. That type of quality control is garbage. I should not have to use pliers to bend hardware into shape. - 1 egg

The "rapid release" on the 5 inch bays is useless, as it fails to hold a CD drive still enough to prevent rattling. I just removed it and used screws.

Finally there is a sharp edge on this case that gave me a significant cut, and it was near one of the wiring cutouts. I am glad I found it with my finger instead of with a power cable. -1 egg.

Finally, the rubber grommets on the back pop out with little provocation but are a beast to pop back into place. Expect a fight if you plan on routing cables through them.

Other Thoughts: Overall, if you can get this case for 40-50 bucks, it is worth it. Expect to purchase at least an extra 120MM fan. I am just tired of the poor quality control of CM products.

Manufacturer Response:

Good Morning Emily,

I apologize your HAF 912 is not working correctly as we can replace the defective fans through our CM Fanzone along with your purchase invoice and serial number at the link below as a Parts Request. We can also discuss your concerns through Live Chat, Phone and Support Ticket.

I look forward to your response.

Felinni M.
CMUSA Support

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

  • Aleshia Q.
  • 10/16/2014 10:25:31 AM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggswonderful

Pros: it looks pretty awesome in person. This is the first time building a pc and im very very happy how everything came out.

Cons: the only issue i had with this is the grounding mounts it wasnt staying on the case so when i put the motherboard in and tighten it down it made this squeak noise and it was stripping it but all in all love the case

Did you find this review helpful? Yes No

  • Rob w.
  • 10/12/2014 7:37:14 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week

5 out of 5 eggsAmazing case

Pros: A lot of space
Tons of HD slots
Fits a 1300 Watt PSU and 2 Raedon HD7970 GPU cards

Cons: none

Did you find this review helpful? Yes No

  • Rocko G.
  • 10/11/2014 12:14:12 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGood airflow and not too big

Pros: For the price, this is a steal... Not too big, but everything fits inside. I5 + gtx760, running cool and tower looks awesome actually

Cons: None that I see.

Did you find this review helpful? Yes No

  • sher v.
  • 10/9/2014 8:34:19 AM
  • Tech Level: Somewhat High
  • Ownership: less than 1 day
  • Verified Owner

5 out of 5 eggsGreat case

Pros: Lots of room to work with good cable routing and it fits my Hyper Evo 212 cpu cooler. I don't have to worry about leaving the side panel open and sucking in dust since my room gets super dusty. Overall this is a great case for a great price.

Cons: none

Other Thoughts: before you put your mother board in if you have the hyper 212 Evo cpu cooler make sure you plug in the cpu 1 and 2 power cable cords first cause the corner is very narrows you can always take the cpu cooler fan off for more space

Did you find this review helpful? Yes No

  • Lucas H.
  • 10/8/2014 11:19:49 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsVery Nice

Pros: This thing is nice. For the price you pay it is really worth it. And it gives you some good options for fans. I am using the maximum amount of fans you can on this case.

Cons: I was working on this case and I sliced my finger open and It almost needed stitches it was really bad so be careful but I did not find this a good enough reason take a star off.

Did you find this review helpful? Yes No

  • EARL L.
  • 9/26/2014 3:21:57 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsThe ONE for all new builds

Pros: I have 2 of these cases. One houses a FX8350 with a H60 water cooler. I added a top fan and side fan. Temps are beautiful...20C. Utilizing Win Pro 8.1. 32gb of Gskill. 250 SSD. 1 1G and 2G harddrives. GTX 760. LG Blu-ray DVD burner and a LG DVD burner. 750psu. 3 usb attached drives. All connected to a MSI G46 Gaming Board. Origrinally was using the Asus MA5990X Pro, it died so this was the replacement. Not a bad choice in an emergency situation. This case just made everything feel at home and is highly appreciated. The other case houses a AMD 6300. Both cases have fulfilled my 2 recent builds with 10 stars each,if I was allowed. Both were delivered in 2 days. The garden state has provided us with great Newegg service.(only items I received from cal. were not up to standard. lol. The cases remind me of the Addtronics cases I purchased years ago. Made of steel and sturdy.

Cons: No lights on the front of the case. Its hard to see the usb ports with no lights on. Will try and find a led diode, small or some colored tape. This not a con. Just a comment.

Other Thoughts: I find this case to be winner. get 1 or 2.

Did you find this review helpful? Yes No

  • Simon N.
  • 9/23/2014 6:09:17 AM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsHAF 912

Pros: This turned out to be a better case than i expected it to be. First of all for a mid tower it has a lot of space to pretty much fit any graphics card once you rearrange the HDD cage, also a lot of options for mounting fans which also helps with your temps. Overall i can say this is a solid case.

Cons: interior could have been painted but who cares.

Other Thoughts: I recommend this case to anyone. Will update in a in week n a half when i have my gtx 970.

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

  • Danny M.
  • 9/21/2014 5:24:36 AM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggs

Pros: Good case for the price !

Cons: None

Did you find this review helpful? Yes No

  • Donald B.
  • 9/19/2014 5:49:29 PM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsCooler Master HAF 912 Case

Pros: Good quality case for the price. I like the fact that I can mount a 200mm front intake fan , as well as a 200mm top exhaust fan. the intake dust filters could be finer, but still not enough to take an egg off. overall a very good case for the money.

Cons: The manual could be larger, so us older people could see it without using a magnifying glass.

Other Thoughts: A good quality case.

Did you find this review helpful? Yes No

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Item#: N82E16811119233
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