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Item#: N82E16811129100

Antec Twelve Hundred V3 Black Steel ATX Full Tower Unbeatable Gaming Case

  • Steel
  • ATX Full Tower
  • Up to 9 Internal 3.5" Drive Bays
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The Unbeatable Gaming Case
Antec's Twelve Hundred V3 gaming case combines maximum performance, cooling and compatibility in a full-tower package. Thirteen drive bays, space for graphics cards as large as 17.5", a CPU cutout, an internal 2.5" SSD drive mount, and newly integrated USB 3.0, all come together for a robust foundation for your components. The Twelve Hundred V3 features a top Big Boy 200™ blue LED cooling fan, two rear blue LED 120mm fans and three front blue LED 120mm fans. Apart from standard size power supplies, the Twelve Hundred V3 can accommodate Antec's CPX form factor PSUs. Outfit your components and maximize their performance with Antec's Twelve Hundred V3.


Twelve Hundred V3

Unbeatable cooling system, including a top 200 blue LED fan and five 120mm fans

Twelve Hundred V3

Convenient top accessory tray and front mounted USB and HD audio ports

Twelve Hundred V3

Filtered front panel takes in air efficiently and prevents dust buildup

Twelve Hundred V3

Stylish windowed side panel lets you show off all your hardware

Twelve Hundred V3

Front Panel USB 3.0 port


Model Twelve Hundred V3
Case Type Full Tower Case
Color(s) Black
Cooling System
  • 2 rear 120mm blue LED exhaust fan
  • 1 top 200mm Big Boy 200&tradel blue LED exhaust fan
  • 3 front 120mm blue LED intake fans with front speed control
  • 1 window side panel 120mm fan slot
  • 1 middle 120mm fan bracket
Drive Bays
    13 Drive Bays:
  • External 3 x 5.25"; Internal 9 x 3.5" for HDD, or
  • External 6 x 5.25"; Internal 6 x 3.5" for HDD, or
  • External 9 x 5.25"; Internal 3 x 3.5" for HDD or
  • External 12 x 5.25 for HDD
  • And internal 1 x bottom-mounted 2.5" SSD drive
Front Ports 3 x USB 3.0
Audio In and Out (AC'97 and HDA compatible)
Expansion Slots /
Video Card Size
7 Expansion slots
Maximum video card size: 17.5" (444mm) (Note: some video cards may require removal of the adjacent hard drive cage)
PSU Not included
Motherboard Support Mini-ITX, Micro-ATX, Standard ATX
CPU Cutout Yes
Cable Management Yes
Side Panel Features 1 Window side panel 120mm fan slot
Dimensions (H x W x D):
  • Unit Dimensions
  • 22.9 x 8.4 x 20.2"
  • (582 x 213 x 513mm)
  • Package Dimensions
  • 25.6 x 11.8 x 23.6"
  • (650 x 300 x 600mm)
Weight Net Gross: 31.3lbs (14.2kg)
Gross Weight: 38.6lbs (17.5kg)
Special Features Powerful cooling system with large 200mm top-exhaust blue LED fan, two 120mm intake fans and one rear 120mm exhaust fan
Stylish, perforated front panel includes fan control knobs plus built-in washable air filters to minimize dust intake
Seven expansion slots to support multiple graphics cards, including NVIDIA 3-way SLI®
CPU cutout allows for easy installation of CPU coolers
Maximum video card size: 17.5" (444mm) (Note: some video cards may require removal of the adjacent hard drive cage)


Twelve Hundred V3 Twelve Hundred V3 Twelve Hundred V3Twelve Hundred V3

Learn more about the Antec Twelve Hundred V3

Quick Info


  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years

Customer Reviews of the Antec Twelve Hundred V3

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  • Joshua a.
  • 7/27/2015 6:35:33 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggs

Pros: awsome full tower with room for all but the largest GPU's if they pass 12inches. ample cooling from the case's provided fans for overclocking and I think there is even space for a topside RAD if i wanted despite the size of my ext atx motherboard. Also love the blue LED light show and the front side USB 3.o ports are a huge convenience factor that I personally need for space reasons. love the glass window.

Cons: It's a full size tower, so it is HUGE but you should expect that. there is no native mounting for SSD's so you need an adapter sold separately to mount, and there is little to no room for cable management on the backside of the case. I think I crushed some of my power cables to close this thing. Noisy with so many fans but I seem to be one of the few people I know who doesnt care about noise.

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  • Anonymous
  • 7/20/2015 8:04:33 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsPushes alot of air!

Pros: Spacious, cool, compact design.

This case provides plenty of air flow and includes fan filters which is amazing!

This case has plenty of room. 9 drive bays, room for a couple of optical drives, 3 intake fans in the front, 2 exhaust at the rear and one large exhaust on the top.

Cons: In order to swap hard drives, I need to take off both side panels to unscrew which is a pain when you have low headroom clearance for desktop.

I also didn't personally like the mini control panel on the back of the case.
I wish it was a little bigger and located closer to the front of the case considering how large this case @ around 23 inches. Also since I have a separate fan controller with 6 channels, I don't need a dangling speed controller in air. There should be op-out for modders.

Neither were enough to drop a egg, just pet peeves.

Other Thoughts: Added a fan controller with matching LED lights so now the intensity of the fan speed and LED brightness is adjustable which is pretty cool.

Price matches mid tower version of case with mail in rebate. Not sure if this helps considering the whole rebate procedure is always a pain.

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  • Dean N.
  • 7/15/2015 4:49:42 AM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsAwesome case

Pros: What you want it has, unless you don't like blue lights.

Cons: Poor instructions.

Other Thoughts: It all fits.

Intel Core i7-5820K Haswell-E 6-Core 3.3GHz LGA 2011-v3 140W

EVGA GeForce GTX 980 Superclocked ACX 2.0 4GB 256-Bit GDDR5 PCI Express 3.0 x16 SLI Support Video

LG WH16NS40 Blueray Rewriter 16X Speed

Antec Twelve Hundred V3 Black Steel ATX Full Tower

EVGA80 PLUS GOLD 850W Fully Modular NVIDIA SLI Ready and Crossfire Support

Noctua NH-U14S 140x150x25 ( NF-A15 PWM) SSO2-Bearing ( Self-stabilising oil-presure bearing ) CPU Cooler

ASUS X99-A/USB 3.1 LGA 2011-v3 Intel X99 SATA 6Gb/s USB 3.1 USB 3.0 ATX Intel Motherboard

ADATA XPG Z1 16GB (4 x 4GB) 288-Pin DDR4 SDRAM DDR4 2800 (PC4-22400) Desktop Memory Model AX4U2800W4G17-QRZ

SAMSUNG 850 EVO MZ-75E500B/AM 2.5" 500GB SATA III 3-D Vertical Internal Solid State Drive (SSD)

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  • Asher V.
  • 7/11/2015 9:45:36 AM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year

4 out of 5 eggsVery good case

Pros: The case is large and provides very good cooling. Very sturdy and well built.

Cons: I have only two and they are minor.
1. To clean the fan screens you have to take out the drive bays. This is not a huge deal as I don't have to do this a lot but it would be nice if they were a bit easier to clean
2. The back cable bay could be just a little bigger. Not much but just a bit.

Other Thoughts: I have had this case for 2 years and I love. Looks good works well and I can put whatever I want in it. Would recommend.

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  • Anita S.
  • 7/4/2015 5:43:06 AM
  • Tech Level: Somewhat High
  • Ownership: less than 1 day
  • Verified Owner

4 out of 5 eggsGreat Case, Bad Thumbscrews

Pros: Plenty of space inside
Fans are fairly quiet

Cons: First day upon opening the thumbscrews for the side panels fell apart

Other Thoughts: Overall extremely nice case except for the bad side panel thumbscrews

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  • Dana G.
  • 7/2/2015 7:57:13 AM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

3 out of 5 eggsUnexpected reduced quality

Pros: I have always loved Antec products for their styling, price, quality and functionality. The cases that I have purchased in the past have always been whisper quiet while at the same time keeping the interior nice and cool. I have bought several of their cases and as I type this machine has the Antec Nine Hundred case. I never applied power to the case so I cannot comment on the fan quality or the other things I have always loved about these cases. Having said all of what the pros used to be it is now time to move to the cons.

Cons: I received my Twelve Hundred yesterday and was shocked at the decline in quality. When I was removing the thumb screws holding the front and rear panels one of the screws crumbled between my thumb and index finger. The screw was composed of both plastic with a metal core. I checked my old Nine hundred and yup, it had solid metal thumb screws. Then when I turned it over onto its side, the top fell off, because the plastic molding that the screws were connected down into had become sheared off. I am getting ready to get an RMA for this case and I am conflicted.. Do I risk getting another one of these or do I instead research other cases. Needless to say I did not expect nor want this outcome.

Other Thoughts: Maybe they had a bad batch of plastic or something. But they did move from all metal in some parts to a combination of plastic and metal so maybe not. Wow, what a disappointment.

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  • Michael W.
  • 6/30/2015 8:32:10 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggs

Pros: This thing is a tank. Big and heavy, this case feels like it can take a real beating while keeping its contents nice and safe. Only one exception, see cons.

Looks cool- Looks aren't everything but its not exactly inconspicuous and its going to be sitting in your office, game room, mancave, bedroom, dormroom, etc for a long time. Best to have something you don't mind looking at every day.

Good airflow- Lots of well placed fans. There are more powerful fans out there, but the included fans are good enough for the vast majority of potential users, and very quiet.

Drive bays- Quite easy to remove and install, making assembly a breeze.

Cons: A few cheap parts- My first impression wasn't great when, while opening the side panel for the first time out of the box, the plastic part of one of the thumb screws disintegrated into several pieces between my fingers. I hear Antec is good about replacing stuff like this, but for now at least I just cannibalized an older case.

Cable management- OK, but not great. Requires a bit of creativity to get that clean look and maximize air flow.

Other Thoughts: Based on my initial impressions and other user reviews, I get the feeling that I will have this case for several years and multiple builds, making it one of the best values available.

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  • Roger L.
  • 6/30/2015 6:07:32 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsGreat Value for routine builds

Pros: The case accommodates a high number of bay-mounted devices with lots of combinations of 3.5 and 5.25” sizes.
The case comes with 6 (3-pin) fans already installed with nice blue LED’s which work very well in terms of airflow versus noise.

There is a clip-on holder for an optional 120mm fan on the left panel (I bought a 120mm CM Jetflo fan to use there), and another holder for an optional internal fan to be mounted on the inside end of one of the 3 drive bays, making a high air flow conduit.

The case construction is solid, well-made, and had everything I needed and could imagine for the future. I consider it an excellent value.

Cons: While a full tower, the case length is a little shorter than other full towers that I’ve used, which gave much less room to work than I’d like between the motherboard (I bought the MSI Gaming 7) and drive bays. This made cable management between motherboard and drive bays troublesome, and made some connections to the forward edge of the motherboard more difficult. For instance, I ended up bending up the pins on the USB3 socket trying to plug in the cable required for the case’s front panel USB3’s.

There isn’t as much space under the right panel as I’d like for cable management, especially for the SATA and PERIPH (molex) connectors.

Mounting drives and devices in the bays requires old fashioned screws and screwdriver; this isn’t a big CON, but other cases I’ve used have nifty toolless methods (of course, they also cost more).

Mounting the 2.5” SSD in the spot designed for it on the bottom of the case was mildly problematic since all the cables of the power supply run right over it, and the SSD’s power and data connections get intertwined with them; I recommend buying a 2.5” to 3.5” adapter and simply mount it in one of the normal drive bays with the other HDD’s.

While the majority of the case construction is painted steel (making it relatively heavy), the top is plastic; the lip on that top by the front panel seems like a good handle, but I would not recommend using it since it felt like I could easily damage it.

Other Thoughts: I decided to use air cooling instead of water cooling on my CPU (i7-4790K), partly because I was concerned about radiator space and partly because I didn’t plan on extreme overclocking which would justify the need. I selected the Cooler Master Hyper 612 V2 (which worked very well btw); however its extreme height prevented the left panel from being replaced because the built-in fan clip hit the top of the cooler. I had to remove the Jetflo fan I had already installed there and remove the clear plastic section of the panel that had the clips in order to be able to put the left panel on. That left an air grate loose which I had to hold down by making a kluge of screws, washers and a paperclip. Further, the open air grate negates the value of the intake fan dust filters, so I used the Jetflo on the internal fan holder to make an air flow conduit out of the top drive bay right onto the memory and CPU (used the 2nd CPU fan connection on the MB), and adjusted the exhaust fans in order to produce a positive case pressure. While I’m OK with this configuration, I recommend using a smaller CPU cooler like the Hyper 212 to avoid this hassle.

The Gaming 7 only had one USB3 socket for the case’s three front panel USB3’s which required two plugs (one was a double). I bought a USB3 to USB2 adapter cable to make put the last front panel USB socket into service as a USB2.

Because of the high number of fans, I bought a molex to three 3-pin fan adapter cable to cover the three fans not accommodated by my motherboard. I recommend you use this on the 3 fans mounted onto the drive bays since you can use the extra slack when sliding these out; otherwise you might forget about the fan connection and yank on the motherboard connection when you slide the bay out.

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  • Daniel S.
  • 6/25/2015 9:56:10 AM
  • Tech Level: High
  • Ownership: more than 1 year

4 out of 5 eggsOne COOL Case - Great Expansion Capabilities

Pros: This case has GREAT cooling, is open and roomy, and offers plenty of expansion space. You can officially put nine 3-1/2" drives in this case; 3 more IF you use the 5-1/4" bays; and more than that IF you get creative. It would make a great server or file-sharing case (if you have the room for it) due to the number of drive bays.

Superior air-flow and EXCELLENT cooling for your hard drives. The drive bay cages also have filtered intakes on the 120mm fans to reduce dust buildup and they work REALLY well.

Tool-free chassis, mostly.

Cons: Large (but you knew that, right). Drive cages must be loosened for filter cleaning and removed completely for drive insertion / replacement. That being said, if you don't constantly swap drives, this isn't a huge problem. Drives do insert easily and securely once the cages are removed, and the vibration dampening works well. Be sure NOT to loose the drive mounting screws as they are proprietary. I had to order an additional set, which to Antec's credit, arrived rapidly.

Cable management is acceptable NOT great. There is space behind the motherboard for some cables and some passthroughs BUT both could be improved.

Other Thoughts: I have owned this case since 2009 and overall, I love it. It keeps my components very cool - especially the hard drives. Since I run HDDs 24/7/365, this is very important to their longevity. I have some drives in this case that have been running nearly continuously for 5 YEARS! Each drive cage slots 3 drives with one 120mm fan to cool them. Personally, I just use the top and bottom slot (leaving the center free) as the static pressure of the fans is greatest at the outer circumference. I HAVE used all three in the past without a cooling problem.

I especially like the easily-cleaned drive cage dust filters, BUT wish the other intakes were filtered as well. You can greatly reduce dust build-up by creating a positive pressure environment in your case.

All-in-all, even after all this time, this is still a GREAT case for the money. It's especially great if you building with large, clumsy hands like some of us old-timers.

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  • Anonymous
  • 6/16/2015 6:04:28 PM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsgreat case!

Pros: very spacious, great airflow and easy to figure out.

Cons: none yet

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  • $154.99
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Item#: N82E16811129100
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