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COOLER MASTER HAF series RC-912-KKN1 Black SECC/ ABS Plastic ATX Mid Tower Computer Case

Item #: 9B-11-119-233  |  Mfr. Part #: RC-912-KKN1  |  UNSPSC: 43201601
$69.99 Save: $15.00 (21%)

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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
    — Thomas 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’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, high end GPU cards like the ATI Radeon HD 5970 and the NVIDIA GTX 480, large CPU coolers, two 200mm fans, and six 120mm fans.

    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.

    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 1679 Reviews

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    • Filter Results
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    • (58)
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    • Richard P.
    • Verified Owner

    5 out of 5 eggs Great Case for Any Build

    Pros: A great size for about anything you would want to build. Ample room for any cooling setup. Not a bad look either. Comes with sufficient accessories to complete the build. Good pricing point especially when you can get a rebate or find on sale.

    Cons: I've completed two builds in this model case over a four-year period. It's time to put USB 3.0 outputs in the front.

    Did you find this review helpful? Yes No

    • Rob F.
    • Verified Owner

    5 out of 5 eggs Perfect

    Pros: Lots of room, comes with more than enough hardware, cable ties, and instructions. Sturdy, easy to work with. Made the computer speed increase by 15% ;)

    Cons: none

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

    • Eric l.
    • Verified Owner

    5 out of 5 eggs popular case for a reason

    Pros: -great room for cable management, definitely enough tie-down spots.

    -easily removable/Turnable HDD bracket was a huge plus, even though it did fit my MSI Gtx 970.

    -very clear instruction manual, I was a first time builder and definitely appreciated this.

    Cons: Can't think of anything.

    Bottom Line: There's an etched table inside the case listing Motherboard types and the mounting screw locations for each. It was incorrect in leaving out the "G" location for ATX.

    Did you find this review helpful? Yes No

    • Phebe H.
    • Verified Owner

    5 out of 5 eggs Woderful

    Pros: This case is very customizable. Like you can change position or take out hdd cages. It also looks really good. I would by it.

    Cons: none

    Did you find this review helpful? Yes No

    • Michael B.
    • Verified Owner

    5 out of 5 eggs Great case

    Pros: Plenty of room, low cost, good air flow, well made, solid.

    Cons: The only con I have to say about the case, is I wish I was able to do better cable management. But that more then likely my fault.

    Did you find this review helpful? Yes No

    • annick b.
    • Verified Owner

    5 out of 5 eggs haf 912

    Pros: look nice .not too big ,great cable mannagement :) very good air flow

    Cons: none

    Did you find this review helpful? Yes No

    • Sam M.
    • Verified Owner

    5 out of 5 eggs ***Great Case***

    Pros: Easy to Work With
    Well Made
    Moves Plenty of Air
    Large for a Mid Tower
    Umpteen Ways To Modify Front Panels for USB3.0,DVD/CD Combo etc

    Cons: I/O Plate fit funky
    Removal of HDD Caddy for GFX Leaves Scant Room For More Than 3 HDD
    Had to Remove SSD Tray So 850w PSU Modulars Would Fit

    Bottom Line: If you're on a budget or just plain budget minded and wanna get something to base a good barebone build on you certainly won't go wrong here. Sure it doesn't have a DVD Combo or Front USB3.0 but hey won't break the bank and you can choose whats better for you in that department. Highly Recommend.

    Did you find this review helpful? Yes No

    • Jacob T.
    • Verified Owner

    5 out of 5 eggs Epic

    Pros: Amazing Space, High-End Components for a low-end cost, and absolutely amazing build quality.... very sturdy and solid.. In the end I recommend this for those who want a starter case XD

    Cons: Isn't made of Gold XD

    Did you find this review helpful? Yes No

    • JUAN A.
    • Verified Owner

    1 out of 5 eggs Grounding problem

    Pros: After the money wasted on replacing parts, none.

    Cons: 6 Months researching what was causing all peripherals to disconnect, distort, and crash... Along with the money we wasted on repair shop diagnostic fees and "repairs", RMAing my GPU, PSU and motherboard- not once but twice thinking that the company must of made a mistake in troubleshooting cause I thought it had to be the motherboard causing all my crashing, the last 2 repair shops I went to agreed it had to be a faulty motherboard, I've replaced all other parts so why not. I gave up on getting a replacement motherboard from them and went ahead and bought a new one from a different company.. So after 6 months of trial and error, money wasted, and no games being played as well of work being slowed down this new motherboard worked for 2 hours, then made and eerie I've never heard before, emitted smoke from the case, then lit a flame that came out of the chassis from the top. Needless to say, I lost the most expensive parts of my build, my CPU, GPU, PSU and motherboard. So I come here to recheck reviews because 5 eggs to me, meant good enough to buy, also I've never had problems with computer cases before. From what I've gathered via reviews and message boards this case has grounding problems and I have wasted time and money replacing other parts instead of this case.

    Bottom Line: Worried if replacement were to be sent I'd just end up losing more parts to fires, may end up looking for a different case

    Manufacturer Responses:

    Good Morning Juan, I apologize for the inconvenience as there can be several reasons a short can occur from extra stand-offs touching the back of your motherboard to a loose ground from the IO panel that was accidently removed when installing the system and several other factors. I assure all our end users if you're experiencing this issue please reach out to us directly through our CM Fanzone via Live Chat, Support Ticket, or phones for an immediate resolution. I look forward to your response. Regards, Felinni M. CMUSA Suport 1-888-624-5099

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    • jose c.
    • Verified Owner

    5 out of 5 eggs HAF

    Pros: This beast of a case hid every single one of my gigantic non-modular PSUs cables and made it look nice and tidy. It may not be painted inside but who really cares when you buy a product this functional for this price. One of the best computer parts buys of my professional career for the money. Just the extra real-estate and top notch cable management (allowing for better airflow as well ) matched with great fan ports, gave me around ten percent better Firestrike benchmarks! With the removable drive bay, this jawn swallowed up my huge three fan windforce Gigabyte 970 GTX very easily. Don't buy anything else in the same price range trust me.

    Cons: No USB 3.0, but ill just add a header.

    Bottom Line: Do it.

    Did you find this review helpful? Yes No