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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
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
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Learn more about the Antec Twelve Hundred V3


Twelve Hundred V3


ATX Full Tower
Case Material
With Power Supply
Power Supply Mounted
Motherboard Compatibility
Micro ATX / ATX / Mini-ITX
With Side Panel Window


External 5.25" Drive Bays
Default 3, up to 12
Internal 3.5" Drive Bays
Up to 9
Expansion Slots

Front Ports

Front Ports
3 x USB 3.0, HD Audio In and Out

Cooling System

80mm Fans
120mm Fans
3 x 120mm blue LED front fan with front speed control
2 x 120mm blue LED rear fan
1 x window side panel 120 mm fan slot
1 x middle 120 mm fan bracket
200mm Fans
1 x 200mm top Big Boy 200&tradel blue LED fan
Side Air duct

Physical Spec

20.20" x 8.40" x 22.90"
31.3 lbs.


Maximum video card size: 17.5"/444mm

Perforated front bezel for enhanced air intake

Washable air filters reduce dust build-up in your system

CPU cut-out allows for easy installation of CPU coolers

Top component tray stores your music player, camera and more

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, Internal 1 x 2.5" SSD
Bottom mount also included

Advanced cooling system:
- 1 top 200mm Big Boy 200 blue LED fan
- 2 rear 120mm TriCool blue LED fan
- 3 front 120mm blue LED fan
- 1 (optional) side 120mm fan to cool graphics cards
- 1 (optional) middle 120mm fan to cool CPU or graphics cards
- Water cooling platform for reservoir or pump
- Compatible w/ Antec's 200mm Radiator (designed exclusively for the Twelve Hundred)

Manufacturer Warranty

3 years limited
3 years limited

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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  • Thomas M.
  • 7/23/2014 3:17:05 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggs

Pros: Size, air flow, front panel ports, wire management system. I could go on. It's a phenomenal case for the price.

Cons: Heavy. This case, with everything in it, weighs almost 40 pounds.

Other Thoughts: This is an EXCELLENT case for the cost. It's not my favorite case I've ever had a computer, and I've been building computers for about 12 years now. I could not be happier with this case.

Did you find this review helpful? Yes No

  • Zachary N.
  • 7/20/2014 9:25:31 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsBest Full Sized Case I've Owned

Pros: Tons of room and not too expensive for a full size. The 200mm fan on top really helps pull air from the top of the case. Lots of room between the mounting plate and the back case panel means its easy to run all your cabling behind the plate to keep things neat.

Cons: Your mother board needs 2 USB 3.0 connectors if you want to use all three 3.0 ports on the front of the case. Otherwise only the middle and the one on the right work. Not a big deal but there is no USB 2.0 sub connector so its a mild annoyance at the worst.

Other Thoughts: Definitely worth the money. Highly recommended. The fans that come with the case are all blue lit with the exception of the rear exhaust fans. They arent that loud at all. But I would recommend buying some 3 pin Y split fan power cables since there are 6 fans on the case that need 3 pin power connections.

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  • Joshua T.
  • 7/7/2014 10:59:21 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsPoor Paint and Hard to Clean

Pros: Well, its big, and had decent cooling.

Cons: Ok, time to start nit picking. The paint job is absolutely atrocious. It has tons of dust particles under the paint, causing it to bubble. I am surprised I haven't seen another post on this. However, past the paint job as that really doesn't matter. The case itself is roomy enough to put multiple radiators, however the fan configurations (Yes the 2x120's that should take a 240 radiator but they put a HALF INCH GAP in between the fans so its impossible to mount properly...). Now on to the cleaning process. You need to remove 24 Thumb screws to "Clean" the mesh screens in the front (Yeah...), which is extremely annoying to have to do every 2-3 weeks to stay optimal. One of the fans blew out within the first 2 weeks, so i'm not too hopeful with the rest of them. All in all, I should have bought a different case to put my components in.

Other Thoughts: I do not recommend this case to anyone using liquid cooling of any sort. The radiator mounting configurations will not work. The fans that come with this case are prone to going out. You will regret your purchase. I livestream often, and I can't have mechanical breakdowns because of inadequate cooling or parts, so I will be replacing this case with a much better one. Remember, you get what you pay for, and this one is CHEAPPPP.

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

  • Wolfgang S.
  • 7/6/2014 9:14:43 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsA huge case for a new Beast

Pros: - space and design

Cons: none

Other Thoughts: I use now two of those cases and would buy it again for any next PC.

My last case came with the top cover totally broken from the case despite the packaging was without damage.
The design is not solid enough for the top cover just a few simple plastic brackets that were all broken.

I fixed it myself differently and it does not impact my overall rating

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  • Anonymous
  • 6/30/2014 9:59:50 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsDurable and Outstanding Case

Pros: Beautiful Blue LED's and most of all durable.
I love all the fans and it really cools things down. 35C
I removed the HDD cages to fit my H110's radiator.
Amazing space

Cons: The top feels a little cheap and flimsy. Read below for more details.

Other Thoughts: I ordered ground UPS shipping and when the delivery driver delivered this case the box was dented and ripped open on all of the corners. I opened the mangled box and pulled out the case. I was dissapointed to find that the top of the case is unhinged and not secured like it was intended to be. My guess is UPS rough handled the box and broke the top of the case loose. I know it's not newegg's fault and I love the case, but beware! UPS will ruin your stuff if you are not careful :( I'm not going to RMA. I won't be tipping this case upside down or anything.

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  • Anonymous
  • 6/25/2014 1:12:32 PM
  • Tech Level: High
  • Ownership: more than 1 year

5 out of 5 eggsFavorite computer case

Pros: Can't say enough about this case, it's quite literally my "dream case" - first time I built my own PC 20 years ago, I dreamt of a tall, white tower case. Went to the Computer Show & Sale in my area and there it was, my first Antec. I've had them ever since - just something about all that room for wiring, fans, coolers, and nothing gets in the way (save for a random side fan).

Cons: Not enough fans. :p (tongue in cheek statement)
Granted, the side fan can be obstructed by a large cooler, which is moot point when you've got 7+ fans running.

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  • Michael R.
  • 6/11/2014 6:56:23 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsAdequate case.

Pros: Case is large; there is plenty of room for all of your HDDs, SSDs, optical drives, and more. There is plenty of room for cabling, even with multiple large GPUs. +1 Egg

Adequate cooling: The case comes stock with an adequate number of fans that provide sufficient air cooling to keep your components running within safe temperatures. Dust filters are built-in to front-facing fans, to help reduce dust build-up. +1 Egg

Quiet-ish: Despite the size and quantity of the fans present in this case, it runs relatively quiet. +1 Egg

Cabling room: There is a ton of room to hide cabling in this beast, and they provide plenty of loops and holes to route it through. +1 Egg

Cons: Poor craftsmanship: Antec's craftsmanship seems to be slipping. This is the 6th or 7th straight Antec case I have used in a build, but only the second Twelve Hundred. The first Twelve Hundred I used was outstanding. This one, on the other hand, is not.

I was forced to RMA the first one I received with this order, due to the case arriving physically damaged beyond usefulness. NewEgg replaced the case without trouble, but even the second case received was damaged. Having shot well past my deadline, I could not afford to RMA the second case. It is usable, but for the price, I expected far superior craftsmanship. Both cases suffer from the top of the case being separated (wholly, on the first, partially on the second) from the main frame of the case. The USB ports on the front of both were marred and appear to have been inserted into the top plate of the case with a hammer.

Furthermore, the case, while supplied with two rubber-grommeted ports on the rear for liquid cooling hoses, does not support any internal-mount liquid cooling options. With such a large amount of room, and a huge fan on the top of the case, this should have been a no-brainer for Antec. Unfortunately, this entire case seems to have been an afterthought by Antec. One which was executed poorly.

-1 Egg

Other Thoughts: It wouldn't take much from Antec to turn this beast into a powerhouse of a case, in my opinion.

- Add a simple mounting point, immediately beneath the large top-mounted fan, for mounting a liquid cooling radiator to.

- Use higher quality plastic. The plastic used in this case seems to be very flimsy and cheap, resulting in easily-damaged mounting points within the case's structure. This resulted in both cases I received being damaged in the same way and same spot.

- Provide alternate power connectors for the case fans. Not many motherboards provide more than 6 3-pin fan connectors. As a result, I will have to buy my own adapter to utilize all the beautiful big fans in this case.

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  • Roger H.
  • 6/6/2014 10:57:18 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsNice sturdy case

Pros: I've had two of these for over a year and was the first one I thought of when doing a new build. Case is sturdy, well finished and the drive caddies are very handy. Yes it's heavy which I like. Front ports are in a good location. Drive caddy filters keep the inside relatively clean. Maybe once every year or two it'd be a good idea to clean the inside.

Cons: Air filters require removing side panels that are held with thumb screws so the caddy can be pulled forward about a 1/4 inch to access the filters. Not a real problem, but I'd like cleaning the filters to be easier. (We have 3 cats)

Other Thoughts: As I commented in cons, I'd like to see it easier to move the drive caddies forward to clean the filters, but this is one whale of a roomy and sturdy case with a well thought out layout. Cables can be run behind the back plane which helps to keep the "innards" neat! I'm looking forward to seeing what changes they've made in the new version

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

  • Brandon B.
  • 6/3/2014 9:42:25 AM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year

5 out of 5 eggsdoesn't dissapoint

Pros: I bought this after reading the amazing lives up to it's legacy. It has plenty of room, looks great with the lights, clear plastic and cables hidden and tons of cooling. I bought a huge gpu and it just fit right in.

Cons: The con to me is the filters can clog pretty fast. My temps hit 70C clogged and 40C unclogged on a i7 cpu. You have to either haul this heavy thing off to air blast it or take out screws to get to the filters. They could have made the filters easier to get to.

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

  • Robert H.
  • 5/20/2014 6:11:17 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsUnbeatable.

Pros: -Very attractive.

-Has room for my enormous bear-like hands.

-Thumb screws for both side panels and drive cages, which pop right out the front of the case after removal of four thumb screws each.

-Cable management is excellent.

-Blue LEDs are sexy.

-Room for every dang thing a reasonably-minded human being would ever want to cram into a PC case.

-Actually does a great job of keeping dust to a minimum. I--being the lazy git I am--went two years of running a gaming rig in one of these without opening it up for a cleaning, and there was about half the amount of dust my previous case had after the same length of time.

I was a mid ATX guy before I bought this thing. Now I'll never run anything but a full tower for the rest of my life.

Cons: -Heavy and unwieldy. And I mean HEAVY. Moving this thing *without* all the hardware inside is like moving a washing machine. Once she's fully loaded, well...hope you know someone with a forklift.

-The big boy fan on top *will* malfunction after a month or two.

-The 3.5" drive cages are horrible in that they require special screws that are almost an inch long.

Other Thoughts: So. Much. Room.

Did you find this review helpful? Yes No

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Item#: N82E16811129100
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