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Cooler Master HAF 912 RC-912-KKN1 - High Air Flow Mid Tower Computer Case

Item #: 9B-11-119-233  |  Mfr. Part #: RC-912-KKN1  |  UNSPSC: 43201601
$69.99 Save: $5.00 (7%)
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    Top Favorable Review

    Great case for my first build

    -well written/drawn instructions -lots of space -well build -easy to disassemble -super bada** looking -can fit about a bajillion and five hard drives if that's your thing. -good airflow (enough for me), especially with all my fans. Read more
    — Linda S. 2/10/2011

    Top Critical Review

    Color Blind Manufacturer

    The person that assembled thias must have been color blind. I spent the better part of 3 hours trying to figure out why only the "reset" LED would come on when I plugged it in. I took the face off the front of the case, this after trying several ... Read more
    — Charles W. 12/24/2011

    Quick Info


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

    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
    M/B Type ATX / MATX
    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

    Customer Reviews of the Cooler Master RC-912-KKN1

    Do you own this product? WRITE A REVIEW

    5 out of 5 eggs Based on 1652 Reviews

    See all reviews

    • Filter Results
    • (1474)
    • (1)
    • (56)
    • (1)
    • Skeletor J.
    • Verified Owner

    5 out of 5 eggs Sturdy case

    Pros: Excellent case. The included dust filters not only on the bottom but also built-in on the front panel eliminate your system from intaking too much debris. Pairing it with a aftermarket filter for the side intake? The inside still looks as prestine as when it was first bought.

    Cons: -The inside is not painted. It would have been nice if it was matte black as are the higher end HAF cases.
    -Rubber grommets around the internal holes would have been a nice feature as well.
    -Partly wish the front panel was not only made of plastic. Though rugged for plastic, it would have a sturdier feeling if it was made of metal.

    Bottom Line: This case was used for my girlfriend's first custom build. She is extremely happy with it, and has customized it to her liking. The filters are a great addon for any case. I wish they were standard on more cases out there. Thank you for this awesome little box, Cooler Master!

    Did you find this review helpful? Yes No

    • George H.
    • Verified Owner

    5 out of 5 eggs Great case

    Pros: For the budget minded who wants a quality case...this is it! Some cases in this price range are a bit "flimsy" ..not the 912! Its a very sturdy case. has all the quality features one comes to expect from Cooler Master. the 912 will handle the 212 plus CPU cooler, or the H50 water cooler, and easily takes the EVGA 960 video card

    Cons: There are no real cons for this case Some might say it lacks fans, if more fans is your wish buy the 922! or add your favorite fans

    Bottom Line: The 912 will handle all your peripherals. I simply take the supplied front fan and place it on the side door then buy 2 Cooler Master 200mm fans, one for the top and one for the front. This gives you more than enough air to cool even a "hot" machine.

    Did you find this review helpful? Yes No

    • Anonymous

    5 out of 5 eggs Looking For A Good Budget Case?

    Pros: Yes, I know this case is quite old at this point. However, unlike some old cases, it doesn't feel cheap and isn't lacking anything that people actually need. Almost like CM knew 2015 was coming. The case supports a good amount of watercooling. You can fit 1 240mm Rad at the top and 1 120mm at the back without modding. However, I would mod this to have a new paint job, a window, and a reservoir and pump mounting spots. For $60 I would recommend this case.

    Cons: The only problems I have are the awful PSU filter, not so neat cable management, (still decent) No interior paint (even for an OLD Case). Thats it.

    Bottom Line: I will be buying this case Again to mod it and see what I can make.

    Did you find this review helpful? Yes No

    • Mr. C.
    • Verified Owner

    5 out of 5 eggs Awesome Case

    Pros: The cable routing options are excellent in this case as it has a raised platform that the motherboard sits on so you can run cables behind it, there is also a cut-out behind the cpu to assist with mounting your cooling solution... you can also remove the middle HDD cage for better air flow and it looks cool.

    Cons: I haven't tested this but I read in someones review and verified by measuring my case that this will not take most full sized liquid coolers (corsair h100i) without modifications, so I ended up getting a smaller cooler instead.

    Bottom Line: really a great case and when I get my liquid cooler in the mail (intel) i'll be able to decide if my only con was a con or not.

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

    • Glen B.
    • Verified Owner

    5 out of 5 eggs Awesome case for value

    Pros: Very roomy case, plenty of room for most PC builds. With removable drive cage can accommodate some of the larger video cards like my EVGA 980 GTX.

    Very solid yet lightweight build, no sharp edges or anything to get hung up on during build. Has knockouts for water cooling and everything you need for good cable management.

    Cons: The only thing I wish they would change is to put the USB and headphone / mic jacks below all the DVD drive bays. When I have my headphones plugged in to the front the wires hang down in front of the drive bay. It seems most case mfg. are doing this now, seems kind of silly to me that they would design this way.

    Bottom Line: Great case for a great price. Keeps my systems plenty cool, I have done 3 builds in a row with this case. The first was back in 2009 and this recent one was April 2015. My entire family has this same case now because it works so well!

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

    • Charles B.
    • Verified Owner

    5 out of 5 eggs Lots of room

    Pros: Plenty of room for some really good airflow. Comes with 2 120mm fans from Coolermaster. Has enough options for a top mount, 120mm, 140mm, or 200mm. I put 2 120mm in the top and one more on the side and this baby moves some air, right now according to cpuid hwmonitor my fx4170 is between 6c and 21c, mostly down around 12 - 15c. MB is at 31c and my gtx750 is at 29c. both are mildly oc'd. Easy to remove the plastic faceplate, finally someone used their head for something other than a hat rack, Personally I cant say enough good things about this case. CoolerMaster out did themselves and the other case manufactures with this one.

    Cons: Just one but it's no real big deal. make sure your mb plugin has a long cable otherwise you won't be able to run it behind the mb. Mine just runs straight up the mb to the plugin, like I said no real big deal.

    Bottom Line: If it lasts as long as the Rosewill I bought in 2008, I will be one happy camper. But it is a good looking case. btw, the Rosewill case is still going strong but my g/f kinda latched on to it and I havent been able to get it back yet.
    The only thing that I can think of that would make this case any better is for the mb and case manufactures get together and come up with a standard for hooking up the power switch, reset, hd light and power light to make them into 1 plug. I am 54 and I don't see as well as I used to, some of the print on the mb I had to take and put my reading glasses on, get a magnifying glass and a flashlight to see, still and yet most of it was guess work on what it said.

    Did you find this review helpful? Yes No

    • Darren M.
    • Verified Owner

    5 out of 5 eggs Awesome Case

    Pros: This case has alot of room in it. Cable management is easy peasy. Can put your cables in behind the Motherboard and the back panel. I installed 4 extra fans in the case to aid in cooling.

    Cons: None that I know of

    Did you find this review helpful? Yes No

    • Anonymous
    • Verified Owner

    4 out of 5 eggs My first case, and it's been great

    Pros: Lots of fan options. Plenty of room to do what you need to do for your build. Very sturdy, haven't worried about the structure. The black paint job on the outside is nice, the HAF logo on the side is pretty neat.

    Cons: Interior isn't black, dust filtration is mediocre, could've done without one of the HDD cages (see other thoughts), no rubber grommets for cable management.

    Did you find this review helpful? Yes No

    • brent c.
    • Verified Owner

    5 out of 5 eggs best buy under 100$

    Pros: roomy enough to take massive video cards and hsf and still have room to work in. sturdy construction. easy to mod. great airflow with a few cheap fans

    Cons: no usb 3.0, bottom hard drive cage not removable unless you cut the rivets

    Bottom Line: removed bothe the hard drive cages and moved my 3.5" 1gb standard hd into the 5.25 bay to open up airflow at the bottom front of the case.. with 3 relatively cheap fans (2 in, 1 @ front and 1 @ side, 1 out @ top) this baby has plenty of airflow

    Did you find this review helpful? Yes No

    • Ryan W.
    • Verified Owner

    5 out of 5 eggs

    Pros: Great airflow and multiple fan placement options. Cable management is decent and although there are no rubber bushings it didn't have any sharp edges to contend with.

    Cons: None

    Bottom Line: Have used this case for 2 builds now, running as many as 7 fans but still nearly silent. Best case for the money, whether it's a budget build or performance this case works great.

    Did you find this review helpful? Yes No