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Item#: N82E16811129043

Antec Twelve Hundred Black Steel ATX Full Tower Computer Case

  • Steel ATX Full Tower
  • 2 x USB 2.0, 1 x eSATA, HD Audio In and Out Front Ports
  • Default 3, up to 12 External 5.25" Drive Bays
  • Up to 9 Internal 3.5" Drive Bays

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

Antec’s Nine Hundred case was acclaimed for its combination of style and cooling design. The Twelve Hundred is an evolutionary improvement that capitalizes on the original design and adds even more for a design that can take whatever you throw into it. Even the largest 10.5” graphic cards like AMD’s Radeon HD 3870 x2 and Nvidia’s 9800 GX2 fit into any of the 7 expansion slots within its cavernous interior without limiting hard drive placement within any of the 12 bays. Mini ITX, Micro ATX or standard ATX motherboards likewise fit with ease.

A pair of three-speed 120mm blue LED fans exhaust heat out the rear of the case while a 200mm fan does so through the top. The speed of the fans, can be controlled from the outside of the case. Space and mounting points are provided for two more 120mm fans – one in the middle to cool the CPU or graphic card, and another bringing air in through the side panel to cool the expansion cards. Knockouts for liquid cooling systems are built in as is a platform for a reservoir or pump.

Because excess heat will kill any system, the case is designed to maximize cooling. The perforated front bezel offers maximum air intake by the trio of 120mm blue LED fans that pull air through the washable air filter. The front panel is finished off with top-mounted I/O ports for easily connecting an eSATA and a pair of USB 2.0 devices along with HD audio inputs and outputs.

  • newegg Increased Expansion With a total of 12 drive bays, you can expand your system to the limit
  • newegg Excellent Cooling The Antect Twelve Hundred comes equip with massive cooling options. A special 200mm fan on top, two rear 120mm fans , 3 front 120mm fans, 1 open slot for a side case fan, and one open slot for a middle fan give you ultimate cooling where you need it most.
  • newegg Cleanable Air Filters The cleanable air filters reduce dust build up on your expensive parts.

Learn more about the Antec Twelve Hundred

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details

Customer Reviews of the Antec Twelve Hundred

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  • Michael S.
  • 7/18/2015 4:16:41 PM
  • Tech Level: Average
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsAWESOME!

Pros: I've had this puppy for 7 going on 8 YEARS! All of the included fans(and LEDs) have worked flawlessly for all these years. I get great temps with the amazing airflow and have used the same case for all 3 of my builds. Everything else has been replaced 2-3+ times. (Motherboard, RAM,etc. And none of it was from hardware going bad, just upgrading for games.)

It was easy to set up and has great cable management. I originally bought the antec 900 but it didn't fit my graphics card, so I bought this bad boy and never looked back. AND it looks totally sweet. 7 years later and I still get compliments on how "cool" my case looks. Pull the trigger now, you won't regret it.

Cons: You have to clean the filters on the fans.

This really isn't a con though. I'd much rather clean the filters on the fans than have tons of dust IN my computer. On my hotter systems I would clean them every three weeks or so. On my current build (which runs much cooler) I only clean them every three months or so.

Other Thoughts: Best computer related purchase I have ever made!

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  • Lance T.
  • 7/7/2015 8:02:30 AM
  • Tech Level: Average
  • Ownership: more than 1 year

3 out of 5 eggsGood case overall, some redundancy.

Pros: Plenty of room in the case, and it looks great. Really like the removable HDD trays and the front-end filters for the 120mm fans.

Cons: Although the case is loaded with fans, after some cooling tests I've noticed some redundancy. I watched my GPU/CPU temps as I manipulated the fans and got a few surprising results.

I experienced no temperature improvements running both rear fans, and I actually got optimal results with one rear fan completely off and the other on low. It appeared that the dual fans on high actually ended up pulling air away from the CPU/GPU fans. This could be attributed to the stock heat sink on the i7 980x.

The power button died after about two years, there's a short somewhere in the wiring. I've ended up just putting the reset button on the power jumper, which works, but I no longer have a reset.

Other Thoughts: It's a nice case overall, but I think the number of fans is kind of a gimmick at this point. It doesn't seem to be airflow optimized, and I've had better results with fewer fans. This may be CPU specific. It turns out the power button issues are a common problem on this case as well.

Good case, it's solid, can be customized, but in 2015 I think you can do better.

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  • Joseph U.
  • 4/24/2015 10:13:31 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year

5 out of 5 eggsThe old tank

Pros: So I want to start by saying that I've had this case since around December 2008, since then it's played host to 3 different builds, and while it's getting a bit long in the tooth for a PC component, it still does a great job of keeping everything inside cool.

The fact that you can move the hard drive cages around and put your optical drives (if you still use them) at the bottom of the case is great, better airflow to your GPU/CPU and easier access to your disk drives.

The side panels and main body of the case are pretty sturdy steel, and the side panels feel much heftier than cheaper cases of this size, even the plastic on this case feels sturdy.

The dust filters on the HDD bays are easy to remove and do an ok job of keeping crud out of your case, I have 3 cats and the front filters catch most of the fuzz they leave floating around.

Cable management is pretty good for a case this old, managed to get everything tucked away behind the back panel and I've got 5 hard drives and a BD-rom in it right now.

Air flow is fantastic, comes with 6 fans pre-installed.

This case has lasted me 5 1/2 years and still provides great cooling and plenty of room for current gen parts

Cons: If this were a new case, these would probably be enough to dock an egg, but seeing as this is the 1200 R1 from 2008, I'm gonna let it slide, just letting people know what to expect here.

No intake cutout for bottom mounted PSU, most new cases have a grill for your power supply to pull fresh, cold, air in from underneath your case, when this was released, bottom mounted psu's were a bit of a new thing, so your psu will be pulling warm air out of your case.

No cutout behind the cpu, which means you're probably going to have to pull your motherboard if you want to swap your heatsink, fun stuff.

All 3 of the included front panel intake fans in my case died within 2 years, the 200mm on top and the 2 rear 120mm fans are still going.

Fans all use 4 pin Molex connecters, this makes a big ugly stack of molex connecters behind the mobo tray

No USB 3.0 on the case

Side panel fan mount may get in the way of larger heatsinks

Other Thoughts: Most of the cons I mentioned have been resolved in the 1200 R3, which is actually cheaper than this model now, I picked my R1 up for $130 around December 2008, and it's been a sturdy, good looking case.

I'd still recommend the 1200 as a case, but get the R3

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  • nathan m.
  • 4/15/2015 11:01:03 PM
  • Tech Level: Average
  • Ownership: 1 month to 1 year

5 out of 5 eggs

Pros: heavy duty case
good airflow
Easy cable management
plenty of USB ports

Cons: very heavy, mine with all parts included is 60 lbs making it very hard to move.

Other Thoughts: Overall very good case

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  • brian r.
  • 12/8/2014 4:07:21 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsNice Case.

Pros: Very Big, can hold everything I will ever need to put in a pc. Liquid cool compatible. Metal, heavy duty, lots of fan (all still working like new) Cleanable dust screen in the front.

Cons: Too many screws involved in adding hardware, so I just left some out. Tedious to remove and clean dust screens. Fans are a bit loud.

Other Thoughts: Over all I love this case.

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  • Brandon B.
  • 11/29/2014 7:45:14 AM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

4 out of 5 eggsNot bad

Pros: Huge case with great airflow
Looks nice
Tons of room
Makes cable management easy

Cons: Front ports stopped working after 6 months ~ 1 year
Too heavy to consider shipping back for repairs

Other Thoughts: I probably would have tried to have the usb/audio ports repaired if my computer parts didn't need a case.

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  • Rena S.
  • 3/17/2014 10:26:19 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

4 out of 5 eggs

Pros: Great quality on the build and finish, I really like the looks of it. I have had this case for over 3 years and the fans are still going strong with daily use.

I would have given it five stars if it wasn't for the filters being hard to access (See Cons).

Cons: Filters: I wish they would have made it easier to access the filters for cleaning. Having to remove both side panels and loosening the tray screws to slide them forward to get the front filters is a pain.

Mounting HDD: Now if you are like me and have had the case for a fair amount of time make sure you keep track of where you put the long screws that come with it for mounting HDD's (I keep a small storage case with all my extra stuff for future so this wasn't an issue). I wish some more designing would have gone into this so nothing special would have been needed.

Other Thoughts: Since I live in a very dusty area I finally gave up on the filters and removed them totally from the case and make sure I keep up on my cleaning of my systems, I find it makes it much faster to clean the fans/system and so on without them in place.

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  • William R.
  • 7/29/2013 4:15:19 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsAwesome Case

Pros: Best case I have ever purchased. Mine has been running 24/7 for the past 2 years and I have yet to encounter a problem with it. All components can fit comfortably and there is plenty of room to upgrade in the future. This case is really durable and you can feel it in the weight. This is the only case I will ever consider buying in the future for more rigs. Fan placement is excellent and moves air very well to keep temperatures low.

Cons: None!

Other Thoughts: Antec is a great company known for their durability, reliability and longevity. I would expect nothing less than this stellar product. This one is a winner.

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  • Matt S.
  • 7/8/2013 7:11:15 AM
  • Tech Level: Average
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsChamp!

Pros: I've had this case since early 2010, and after 3 years everything is working flawlessly. Well built. Antec makes great products.

Cons: None.

Other Thoughts: It's too bad they've discontinued this case.

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  • Kenneth R.
  • 7/2/2013 9:08:28 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsStill Working

Pros: After 3 years still works flawless and have had no issues.

Cons: None

Other Thoughts: None

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