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Cooler Master HAF X - Full Tower Computer Case with USB 3.0 Ports and Windowed Side Panel (RC-942-KKN1)

614 customer reviews
| 17 answered questions

List Price: $199.99
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Usually ships within 2 to 3 days.
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  • SATA dock for easy installation without the need of removing side panel
  • Internal USB 3.0 on front I/O panel
  • Air duct to cool the latest graphics cards
  • Up to one 230 mm fan and three 200mm fans
  • 9 expansion slots support 3-way and 4-way SLI and Quad CrossFireX.
  • GPU air duct with fan for SLI or Crossfire cooling
  • Power supply partition to conceal cables
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Frequently Bought Together

  • Cooler Master HAF X - Full Tower Computer Case with USB 3.0 Ports and Windowed Side Panel (RC-942-KKN1)
  • +
  • Arctic Silver 5 High-Density Polysynthetic Silver Thermal Compound, 3.5 Grams
  • +
  • Intel Core BX80646I74790K i7-4790K Processor (8M Cache, up to 4.40 GHz)
Total price: $475.48
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This item: Cooler Master HAF X - Full Tower Computer Case with USB 3.0 Ports and Windowed Side Panel (RC-942-KKN1)
Customer Rating 4 out of 5 stars (614) 4 out of 5 stars (84) 4 out of 5 stars (157) 4 out of 5 stars (300)
Price $167.94 $171.97 $149.98 $112.98
Shipping FREE Shipping FREE Shipping $21.99 $16.99
Sold By RackGo Galactics founderdirect(We don't ship to HI/AK/PO BOX/APO/FPO founderdirect(We don't ship to HI/AK/PO BOX/APO/FPO
Color Black Black Black Black
Dimensions 25 inches x 25.5 inches x 11.5 inches 23.8 inches x 22.8 inches x 9.8 inches 23.8 inches x 22.8 inches x 9.8 inches 19.7 inches x 10 inches x 22.2 inches
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Product Description

Style: RC-942-KKN1

Product Description

The much anticipated HAF X arrives as the flagship of the popular HAF (High Air Flow) series. Designed for performance systems, this chassis is able to house today's latest and hottest CPUs, motherboards, graphics cards, and is compatible with USB 3.0 devices. With specialized support and cooling for graphics cards, massive airflow with the help of up to four gigantic fans and easy access to installed components, this is as close as it gets to a system builder's 'dream case'.

From the Manufacturer

Cooler Master HAF X Full Tower Chassis

The case that is held up as the benchmark for full towers, HAF X has remained the flagship of the highly popular High Air Flow Series (HAF). Its rugged militaristic design offers a tough casing that provides outstanding protection while providing an unprecedented ease of use when it comes to building and managing a complex and powerful system. This extends to support for the latest graphics cards and components.

The HAF X can handle up to four full length graphics cards.
Using micromesh filters located in the front bezel, top exhausts, side panel, and bottom floor, the HAF X is resistant to dust buildup.
A high airflow design strives to eliminate overheating with Large 200 and 230mm fans that spin at lower RPMs to ensure high Airflow without high noise.
There are two X-Dock bays at the front that are compatible with up to two 3.5” or 2.5” drives.
Two front ports are USB 3.0 and compatible with SuperSpeed USB. The HAF X ports are backwards compatible with USB 2.0.

Technical Specs:

Available Color Black
Materials: Case body: Steel
Front and Top Mesh: Plastic
Dimensions (W/H/D) 9.1(W) x 21.7(H) x 23.2(D) inch
Weight 31.6 lbs
M/B Type Micro-ATX, ATX, E-ATX, XL-ATX
5.25" Drive Bay 6
3.5" Drive Bay 5 hidden
2.5"/3.5" Drive Bay 2 (converted from 5.25" drive bay)
I/O Panel USB 3.0 x 2 (Internal)
USB 2.0 x 2
Audio x 1
Mic x 1
e-SATA x 1
1394a x 1
Expansion Slots 9
Cooling System Front: 230 x 30mm red LED fan, 700RPM, 19dBA / 110CFM
Top: 200mm x 30mm fan x 2, 700RPM, 19dBA, 110CFM (one optional)
Rear: 140 x 25mm Fan x 1, 1000RPM, 19dBA, 61CFM
VGA Fan Duct: 120 x 25mm or 120 x 38mm fan x 1 (optional)
VGA Holder: 80 x 15mm fan x 1 (optional)
Power Supply Bottom mounted / ATX PS2
Water Cooling Compatibility Top: 360mm Radiator (3 x 120mm fan)

Product Information

Style Name: RC-942-KKN1
Expand all Collapse all Technical Details
Brand NameCooler Master
Item model numberRC-942-KKN1
Hardware PlatformPc
Operating SystemWindows
Item Weight31.5 pounds
Item Dimensions L x W x H25.50 x 11.50 x 25 inches
Color Black
Computer Memory TypeDDR3 SDRAM
Audio-out Ports (#)1
Additional Information
Best Sellers Rank
Shipping Weight36 pounds (View shipping rates and policies)
Domestic Shipping Item can be shipped within U.S.
International Shipping This item is not eligible for international shipping. Learn More
Date First AvailableApril 2, 2004
Warranty & Support Return Policy: You may return any new computer purchased from that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellableRead more condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.

Product Warranty: For warranty information about this product, please click here

Customer Reviews

Most Helpful Customer Reviews

85 of 87 people found the following review helpful By Jeff D. on October 6, 2011
Style Name: RC-912-KKN1 Verified Purchase
When choosing a case it is important to make sure it is something that you like and that will fit your needs. Cases are one of the few, if not the only component from a PC rig that will last you through multiple builds. With that in mind, I took a long time researching and browsing around before I decided on a case for my computer build.

The HAF 912 was consistently mentioned across the web by PC enthusiasts and amateurs as a strong case choice for both form and function. Cooler Master named the HAF series to stand for "High Air Flow" and these cases truly shine in that area. I am running an AMD 955 black edition processor overclocked to 4.0gHz and also a Radeon 6950 1gb video card and the case stays between 27-40 degrees celsius on the stock fans (depending on if I am just browsing the web or utilizing more CPU power). I thought I would need to purchase a bunch of extra case fans in order to keep my system temperatures down, but such is not the case. The huge vent in the top of the case can accommodate up to a 200mm case fan, but for now it works very well as just an exhaust vent. Most of the hot air exits through this area.

The 912 also takes a minimalist approach in terms of design and does not include a giant window or bright LED lights like some other cases boast. For myself this was perfectly fine, but if you are looking for a case that has all of these extra features then this is not the right choice for you. I didn't need a flashy case and instead I wanted my money to be spent on build quality and necessary features. Here are some of the key reasons I would recommend this case to a prospective builder:

Airflow- Superb, even with only the stock fans (discussed above).

Capacity/Size- There is plenty of room inside this case.
Read more ›
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48 of 50 people found the following review helpful By Brent L on June 26, 2010
Style Name: RC-942-KKN1
I am putting together a machine with the MSI Big Bang XPower MoBo with an i7 930 CPU, and will have a GTX 470 GPU, with 7 HDD's in various raid configs and a Corsair HX850 PSU. This case is so well thought out. So far no negatives except it is very big, which is actually good, as long as you understand this before you buy.

Cable mgmt is excellent, USB 3.0 on the front as well as Esata and 1394 and USB 2.0, covered on/off switch (reset too).

Wheels are included. Air filters on all openings - except for some reason not on the bottom in front of the PSU. All tool-less drive bays, 2 hot swap drive bays in front (amazingly these are not were they thinking?).

It includes 3, 200 mm fans (top - out, front - in, side - in, and one 120 mm on the rear out. It also has a place for a second (optional) 200 mm fan on the top.

So far it has been a pleasure to work with. I will update this as the build progresses.

update - the only thing marginal are the hot swap drawers. they require screws to hold the drives in (the included thumbscrews work at least) so it not terrible, but it would have been cool to have a method to yank drives in and out with no real effort at all. still 5 stars
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23 of 23 people found the following review helpful By David L. on December 23, 2011
Style Name: RC-912-KKN1 Verified Purchase
I just recently built a new PC using this case, and I must say, it is hands down the best case I've owned so far. The build quality of this product is superb and offers plenty of room for a fully-loaded PC.

Here are a few things I really like about this case:

* It came with a bay specifically for solid state drives.
* Cable management to tidy up the wires.
* Removable front hard drive cage for more room and better airflow.
* Built for using a bottom-mounted power supply unit.
* Very easy to remove the front slots for optical drives (it even comes pre-built with an easy tool-less open/lock mechanism to hold the drive in place).
* Even though it comes with 2 fans, there are plenty of upgrade options for those who want better airflow (although the 2 fans it came with do an excellent job).
* Huge cut-out for those who install larger after-market CPU coolers.

Overall, I would definitely recommend this product to anyone. It would be hard to find a better case at this price range.

Motherboard: ASRock P67 Pro3 B3
CPU: Intel Core i7-2600 @ 3.4GHz
CPU Cooler: Cooler Master Hyper 212 Plus
Storage: Crucial M4 256GB Solid State Drive
Memory: Corsair XMS3 8GB
GPU: EVGA GeForce GTX 560 Superclocked 1024MB
Optical: LG Electronics LightScribe 10x SATA Blu-ray Combo Internal Drive
PSU: Antec BP550 Plus 550W Modular Power Supply
OS: Windows 7 Home Premium 64-bit
Case: Cooler Master HAF 912
Monitor: ViewSonic VG2436wm-LED 24" @ 1080P
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28 of 29 people found the following review helpful By Albert Macias Jr. on July 11, 2010
Style Name: RC-942-KKN1 Verified Purchase
What a case! I went from a mid-tower to a full-tower chassis. Cable management was a cinch. Of the 3 hours spent transferring parts from old chassis to the HAF X, maybe 30 minutes, if that, was spent on cable management. I'm still new to building, however, this case made me look like a professional.

Couple of minor issues:

1. There is a red LED 230mm fan located at the front, a 200mm non-LED fan on the side panel, and a 200mm non-LED fan at the top. Cooler Master allows for an additional 200mm fan at the top of the chassis. Since I didn't go with a water cooled system, I decided to install the additional 200mm fan at the top. However, Cooler Master only sells a red or blue LED 200mm fan. With that said, I took the fan from the side panel (non-LED) and placed it on top along with the other pre-installed 200mm fan, and placed the new additional red LED 200mm fan on the side panel. Looks awesome. Another issue though was that the screws that came with the additional fan that I purchased are different from the screws on the pre-installed fan at the top. I had to contact Cooler Master to send me the exact screws they used on the pre-intalled fan.

2. In regards to the USB 3.0 front inputs, you'll either need a motherboard that supports USB 3.0, or a PCI USB 3.0 card to attach the cables to.

Other than that, the case rocks. I also installed the Cooler Master V8 and not only does it look amazing, but got my temperatures down by like 5-10 degrees!
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