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Cooler Master HAF 912 - Mid Tower Computer Case with High Airflow, Supporting up to Six 120mm Fans and USB 3.0

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

    Learn more about the Cooler Master RC-912-KKN1-GP

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

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    5 out of 5 eggs Based on 1764 Reviews

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    • Anonymous
    • Verified Owner

    5 out of 5 eggs good case

    Pros: has great airflow, the case isn't that big and great price good design but not too boring amazing case.

    Cons: no side window but does anyone really need one.

    Did you find this review helpful? Yes No

    • Jon D.
    • Verified Owner

    5 out of 5 eggs Nice case

    Pros: Nice layout, easy to work in.
    Driver trays come with hardware to just slide in and lock the drives. No screws required.

    Cons: Only 2 front USB headers but that is pretty standard.

    Bottom Line: I have built a couple systems with this case.

    3 out of 3 people found this review helpful. Did you? Yes No

    • David B.

    5 out of 5 eggs This is one GREAT platform to use for your next home-built PC

    Pros: The case is open and easy to work with. All hard drive bays are very accessible, and there is a cage specifically for 2.5 inch drives that mounts to the bottom of the case (it holds 2 drives).
    The power supply is mounted at the bottom of the case, which makes great sense from a power cord management viewpoint. I've never understood why desktop vertical case makers always wanted to put the power supply at the top of the case instead of at the bottom.
    The construction of the base is top notch. It is rock solid and has plenty of openings for fans, including some at the top of the case. The side panels on both sides of the case are removable, making access to all parts of the case easier.
    The hard drive bays use a slide-in system where you attach two slip-on rails to each drive and slide them into place where they lock solidly, but are very easily released for removal or repositioning.
    While there is no built-in USB/SD card front-panel slot arrangement, I did purchase a 3.5" third-party unit that I installed in the 3.5" bay that opens to the front, and that has been great.
    All-in-all, I consider this one of the best built cases I have ever used, and I would heartily recommend it to everyone. I'm a Cooler Master convert for the future.

    Cons: While I did compliment Cooler Master for placement of the power supply on the bottom of the case (and I still think that is a great position for it), there is a matter one needs to remember about that. I recently found my computer shutting down without warning. When I took the case over to a work area where I could set it on its side, I noticed that the power supply fan intake area was totally clogged with dust. I'm sure this was the problem that caused my power supply to overheat and force a shutdown. Once I cleaned away the dust from the mesh Cooler Master places over that fan intake area at the bottom of the case, everything is fine now.
    BUT BEWARE!!! CHECK YOUR VENTILATION PATHWAYS EVERYWHERE FOR DUST!!! This is a problem for all computer cases, not just this case, but as this is the first case I've had with a bottom-mounted power supply, I thought I would mention it here. It never occurred to me that this dust build-up was occurring, as the fan intake was out of sight on the bottom of the case. I'm going to calendar a six-month case cleanup for all my computers. It just makes good preventive maintenance sense.

    3 out of 4 people found this review helpful. Did you? Yes No

    • Richard R.
    • Verified Owner

    5 out of 5 eggs Very nice case

    Pros: I moved from a micro tower to this and it is great. The cable management is nice and I had lots of room to work with.
    Has room for six fans (120mm)
    Has a bunch of space for HHD/SSD as well as 5.25" external bays.

    Cons: None yet

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

    • Anonymous
    • Verified Owner

    5 out of 5 eggs Awesome case

    Pros: - Sturdy, good looking case, and plenty of room.
    - The two fans that came with it are nice and quiet (I threw in a 200mm and mounted it on the top of the case too)

    Cons: - Two of the little rubber things holding on the bottom grate for the power supply ripped then I put it in. Nothing else other then that.

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

    • Anonymous
    • Verified Owner

    5 out of 5 eggs nice

    Pros: Awesome case for the price. I was able to easily fit my gtx 1070 (approx 10 inches or so) into the case by taking the middle hard drive cage out. I like the black and simple look of this case. It seems durable for the price.

    Cons: The space to hide your wires is very tight. The panel was hard to get back on even with wires fastened snug. Would be nice if an extra fan was included instead of 2 120 mm's. Over all a great case for the price.

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

    • Anonymous
    • Verified Owner

    5 out of 5 eggs Amazing Case

    Pros: This case has loads of room, lots of detachable things for more airflow.
    Keeps my system nice and cool

    Cons: The top of the Case is pretty flimsy so be cautious of that

    Bottom Line: For this price i don't know why it wouldn't hurt to buy, everything fit on perfect and makes for an awesome build.

    PS. The front leds are kinda weird since they blow red but oh well haha

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

    • Andrew D.

    5 out of 5 eggs Withstands the test of time

    Pros: -Plenty of space for HDD
    -Screwless 3.5 and 2.5 mounts
    -Plenty of spots for fans
    -Decent cable management options (nothing fancy, but enough to work with)
    -Able to pop out 4 of the HDD slots to open up room for a beastly graphics card
    -Front cover is a snap to come off

    Cons: -If you pop out the HDD enclosures you lose 66% of the HDD bays
    -No side window

    Bottom Line: I bought this 2-4 years ago (I don't exactly remember), and in that time this case still has all the things you would want a mid-ATX case to come with. Cooler Master lived up to it's name on this one - with so many different options for fans. Someone mentioned that this would not be a good case for water cooling but I would have to disagree. I do not use a water cooling system but it seems to have adequate space and it even has ports on the back to feed tubes through.

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    • robert s.
    • Verified Owner

    5 out of 5 eggs great price

    Pros: solid build....loads of space.....lots of fan space....great case.

    Cons: very big.

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    • gerald r.

    5 out of 5 eggs Great case for the price

    Pros: Surprisingly sturdy. Front cover easily removed for fan service. 200 mm fan port.

    Cons: Maybe if they added some rubber cable guards around the board-side perforations it would be better, but this thing is so attractively priced, it's hard to even ask for that. Could use a second fan port on the side, though.

    Bottom Line: Would definitely recommend this case to anyone on a budget, or who just doesn't feel the need to take out a second mortgage for a case. Bought this locally for my son this weekend, and I liked it better than my $98 case; so impressed, I had to review it.

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