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Item#: N82E16811129043

Antec Twelve Hundred Black Steel ATX Full Tower Computer Case

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  • 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): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details

Customer Reviews of the Antec Twelve Hundred

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  • Chris G.
  • 4/6/2016 9:34:39 AM
  • Verified Owner

5 out of 5 eggsGreat Case

Pros: I have two dogs and a cat so hair is everwhere so filters are a must. My wifes computers clogged with hair, but mine just has a fine dust that can get through the filter but can easily be blown out. I used to have the huge air heats sinks (Scthe Ninja on an AMD FX60) which would fit with room to spare. Now I have an Antech water cooler mounted to the two 120mm fans in the back on a i5-3570k.

Cons: It is heavy but I don't move it around much. Filters take a while to clean, you can stick a vacuum in front and clean most of the junk out of the filter but to do it right start taking thumb screws out.

Other Thoughts: This is the second one I have bought. The first one I bought when they first came out. I ran it for years it went through many moves finally some of the fans gave up and one move got dented. So I bought a new one and keep the old one for parts if I loose something.

I'll but another one years from now for my next build.

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  • Jonathan B.
  • 2/10/2016 9:33:34 AM
  • Verified Owner

2 out of 5 eggsOwned over 5 years... get something else

Pros: -lasted a long time
-good cooling

Cons: -size & weight vs interior space is laughable
-impossible to access dust filters (without shut down and HDD/SSD & fan disconnect with proper cable management)
-very difficult to achieve positive pressure rendering dust filters semi-useless

Other Thoughts: Get something better. Corsair & Fractal Design both offer much better and cheaper options. I literally gave my dusty old desk breaker away I was so excited to get rid of it. Hype was justified in 2007-2009, but it's 2016... there are better options for most users.

2 out of 2 people found this review helpful. Did you? Yes No

  • Christopher K.
  • 1/28/2016 8:51:34 PM
  • Verified Owner

4 out of 5 eggsBig, sturdy, needs improvement

Pros: -This sucker is large and in charge. In other words it is very roomy with lots of space for your power user builds with many components.
-Lots of cooling: 7 case fans (I bought an extra for the side panel) keeps everything nice and cool.
-Sturdy design. This is a hefty case and is definitely not going to be breaking anytime soon.
-Mostly tool-less design. With the exception of securing HDDs or DVD drives (although the cages themselves can be removed sans tools) you can do everything with thumb screws.
-Front and side intake fans have washable air filters.

Cons: -The biggest problem with this case is the fact that the front air filters are not easy to access. You have to take both sides of the case off and then unscrew 24 thumb screws (8 screws per drive cage [4 on each side] x 3 cages) to push the cages forward far enough to remove the filters for cleaning. It makes cleaning the filters a real chore and as a result I only secure the cages on one side with 12 screws so I don't have to pop both sides of the case off; even so, I don't clean the filters that often because of the hassle.
-No handles. I listed the large and sturdy build quality as a Pro, but it does have a downside and that is the fact that moving this tower (whether empty or full of equipment) can be a bit of a hassle as it is quite heavy and doesn't have good gripping locations on top.
-I bought this case in January of 2009 and one of the rear exhaust fans seized up after a few years, and one of the front intake fans occasionally is slow to spin up and makes angry noises when the weather is cold. This is pretty minor though given the length of time they've been running at max RPMs.

Other Thoughts: -I wouldn't buy this case again mainly because of the irritation that comes from needing to partially disassemble the case to clean the front filters, and due to the lack of carrying handles for such a beast of a tower. If Antec made a successor case that addressed both of those issues I would happily buy it for my next build. Still, as it is, the 1200 is a solid case.

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

  • Patrick C.
  • 12/27/2015 10:57:25 PM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsPerfect

Pros: 5 year now I have this tower no problem at all

Cons: I love this tower one of the best

Other Thoughts: If you need space this tower rock for gaming

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  • N/A
  • 12/13/2015 11:53:31 AM
  • Ownership: more than 1 year
  • Verified Owner

4 out of 5 eggsBeen awesome Case for Years!

Pros: Keeps my hardware running nice and cool! My CPU is at 19C and my GPU at 31C at an idle! Ive had this case since 2010. Filters are somewhat easy to clean and is easy to mod, painted the front grills orange.

Cons: Well the bad part is that the fans are starting to make noise and Antec Doesn't provide the replacements for the front fans with the variable speed knob. They do however provide the big boy 200mm fan.... not sure what im gonna do when they actually fail :( honestly need to replace all the 120mm fans, another con is that it isnt the V3 with usb 3.0 in the front!

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  • N/A
  • 7/18/2015 4:16:41 PM
  • 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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  • N/A
  • 7/7/2015 8:02:30 AM
  • 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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  • Dex
  • 4/24/2015 10:13:31 PM
  • 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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  • Chewie
  • 4/15/2015 11:01:03 PM
  • 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

Did you find this review helpful? Yes No

  • N/A
  • 12/8/2014 4:07:21 PM
  • 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.

Did you find this review helpful? Yes No

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Item#: N82E16811129043
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