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

Item #: 9B-11-119-233  |  Mfr. Part #: RC-912-KKN1-GP  |  UNSPSC: 43201601
$69.99 Save: $10.00 (14%)
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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-GP

    Customer Reviews of the Cooler Master RC-912-KKN1-GP

    Do you own this product? WRITE A REVIEW

    5 out of 5 eggs Based on 1736 Reviews

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    • Filter Results
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    • Steven P.
    • Verified Owner

    3 out of 5 eggs CM Case is Inexpensive model, good for typical home use

    Pros: Inexpensive, solid, smaller, takes less room then larger tower, plenty of room inside for general computer builds and use.

    Cons: Not near as good as next model up. No slide out trays, except for putting rails on hard drives. Alignment with motherboard bad, which causes video card misalignment.

    Bottom Line: Motherboard does not fit properly, a bit off so that very hard to get motherboard screws in, and causes Video card to mis-align, not seating properly. My CM HAF 932 PC Case (I think that is my personal PC Case model) is wonderful. I use that for gaming and my personal use. I bought this new case to upgrade the family/wife's computer. While it is good quality, the alignment is bad with the motherboard screws almost being forced into the standoffs to hold it down. I will try working on it some more. Disappointed in the alignment problems. I have been working with computers since I got a degree in electronics in 1980. My wife wanted a white case too but found that everyone wanted much more money if it wasn't black paint. The other white cases that were less expensive were lesser quality. I can paint it too. But the case alignment is really troublesome! Huge hassle to send back and forth so I will try to make it align properly.

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    • Anonymous
    • Verified Owner

    5 out of 5 eggs Outstanding Value

    Pros: This is a well constructed case with plenty of room and ability to configure for various needs. The surfaces and edges are well finished unlike some other cases at this price range ($59.99). I'll be coming back!

    Cons: No Problems

    Bottom Line: I had bought another case from a different vendor and returned it because the fit and finish were poor. I happened on this one by chance and highly recommend it.

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    • ROBERT R.
    • Verified Owner

    5 out of 5 eggs Love this case, use it all the time.

    Pros: Fits any components, removable drive cage to fit oversized video cards. Super good looking case, very attractive. Not a HUGE case which is great. Excellent cable management enables you to route all cables behind motherboard area.

    Cons: None.

    Bottom Line: I would recommend this to anyone building a PC.

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    • chris h.
    • Verified Owner

    5 out of 5 eggs Solid case

    Pros: Smaller version of the 932 haf, not too big not too small.

    Cons: None.

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    • Thomas G.
    • Verified Owner

    5 out of 5 eggs Suspiciously awesome!

    Pros: This is the case into which my first computer build has gone, and the roominess, attention to detail, and super quiet fans have made me a not-so-quiet fan of this manufacturer.

    Cons: None.

    Bottom Line: It's roomy enough that I could practically hide in it if bad guys start banging down my door. It has so many cool features that you might as well paint it Swiss Army red. For my first computer build, I had a couple engineering buddies over, just in case. They waxed poetically over this case, and were chomping at the bit as I slowly, methodically, put my first computer together, like it was a cadaver they couldn't wait to stick their hands into.

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    • Jesse H.
    • Verified Owner

    5 out of 5 eggs Very complete and thought out case.

    Pros: Has a lot of great features.
    Lot's of storage space.
    Easy to use.

    Cons: Not painted on the inside.

    Bottom Line: I didn't need the HDD Cage so I removed it to increase air flow.
    After 2 200mm fans, temps will never be a problem.

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    • Daniel G.
    • Verified Owner

    4 out of 5 eggs its cheap, but still great

    Pros: the 2 fans work pretty well, high airflow, plenty of space and room. used for my first build, full atx mobo. it will fit Cooler Master Hyper 212 EVO cpu fan with very little issues does have room on the back for mounting. just enough room to fit all of the wires, also low price for a ton of case. looks awesome.

    Cons: its cheap, so some of the parts are cheap. thats expected. just barely enough room to fit all the wires in the back to get the back on, will have to do some management to get them all in there properly.

    Bottom Line: good first case, seems sturdy. its cheap so anyone looking for a decent case with plenty of room for expansion look no further.

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    • Anonymous
    • Verified Owner

    4 out of 5 eggs A lot of cheap and flimsy components. Get what you pay for.

    Pros: -Very customizable
    -Great air flow
    -Nice means of cable management
    -Looks good

    Cons: -Super flimsy parts
    The front compartment that houses the audio jacks, usb ports, and power/reset switches was really loose. When I'd push a usb cable into it the whole compartment would move back. Audio jacks were impossible to to plug in without holding it in place. I finally opened up the compartment and found that all of the plastic pieces that kept it in place were broken.
    Also, when I was removing the front bezel one of the plastic pieces that kept it in place snapped off. I was not remotely forceful.
    I guess I'll try to super glue it all into place.

    Bottom Line: I'd return the case, but I threw away the box and mixed up all of its screws and such with my motherboard's. So be warned: Keep every component of the packaging until you're certain the product isn't broken.

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    • m. h.
    • Verified Owner

    5 out of 5 eggs Well worth the money

    Pros: Even though this is not a full size case , it has plenty of room for the parts and the hands. It accepts a full size motherboard ,no problem. It comes with some gizmos that make installation easier and the inner design is much improved over just a few years ago. Outstanding price!

    Cons: The power button is at the top of the case and the dvd drives are in the middle. I turned the machine off a couple of times by accident before I got used to the change. That's progress.

    Bottom Line: The cost of a full size case is prohibitive. I will buy this case again if I need another. Or maybe just for the fun of it.

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    • Benjamin L.
    • Verified Owner

    3 out of 5 eggs Nice looking case but...

    Pros: Looks great

    Plenty of space and mounting options for drives, fans, radiator etc.

    MOSTLY Tool free design

    Cons: Construction of the chassis is somewhat flimsier than I would have expected. Back panel VERY flimsy...see below in other thoughts.
    Front power LED annoyingly bright red, unplugged within 5 minutes of installation.

    Front filter not removable, must remove entire front panel of case, which involves removing both sides (one of which has thumb screws, the other does not...why??)

    Manufacturing tolerances seem a bit...loose. Side panel sags a bit, leaving a noticeably annoying gap between top panel and side panel.

    Removable 2.5" HDD cage...not 2.5". Drives fit, but the top drive has about 1/8" total gap between the 2 sides, it fits and screws down to the mounting holes, but looks stupid as the sides are not square to the top of the cage.

    Non-removable motherboard tray (nit picking on this one I know)

    Front fan cable is rather short.

    Bottom Line: Case arrived with back panel caved in near I/O shield hole. No damage to box or foam inserts makes me believe this was damaged in the factory. This made snapping the I/O shield into the panel difficult and not fit properly, even after bending the panel back into some sort of straightness. This does not lend itself to a warm and fuzzy feeling knowing that this back panel is responsible for supporting my large graphics card.

    IMHO, buy a corsair graphite series instead.

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