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Item#: N82E16811129066

Antec Three Hundred Illusion Black Steel ATX Mid Tower Computer Case

  • Steel ATX Mid Tower
  • USB 2.0 / Audio Front Ports
  • 3 External 5.25" Drive Bays
  • 6 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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Three Hundred Illusion
The Versatile Case
  The Essentially Cool and Quiet Case  
  Impressively spacious and unbeatably reliable, the Antec Three Hundred is an unbeatable enclosure. Despite its eminently portable frame, the Three Hundred has enough room for an NVIDIA 8800 series graphics card, as well as six hard drives and a standard ATX motherboard. A cable management compartment keeps your system organized and the airflow unobstructed. A 120mm rear fan and 140mm top fan ensure that the case runs cool even when playing the most demanding games, while the sleek black finish gives it an extra stylish edge.

  No Power Supply included:  
  • To optimize performance of your Three Hundred, your choice of power supply is crucial. Antec strongly recommends choosing from our NeoPower or TruePower series.
Nine Drive Bays:
  • External 3 x 5.25"
  • Internal 6 x 3.5" for HDD
Cooling System:
  • Two front 120 x 25mm TriCool™ Blue LED Fan with 3-speed switch control.
  • One rear 120 x 25mm TriCool™ Fan with 3-speed switch control.
  • One top 140 x 25mm TriCooltrade; Blue LED Fan with 3-speed switch
  • Two front (optional) 120mm fans to cool the hard drives
  • One side (Optional) 120 x 25mm Fan to cool graphic cards
  • Washable air filters reduce dust build up in your system, which helps keep your system cooler
  • Perforated front bezel for maximum air intake
  • Maximum video card size: 12.5" (318mm) (Note: some video cards may block access to the adjacent hard drive bay)
  • Compatible Motherboards: Mini-ITX, microATX, Standard ATX
  • Seven expansion slots
  • Top mounted I/O ports for easy access
    • Two USB 2.0
    • HDA & AC '97 Audio In and Out
  • Unit dimensions:
    • 18" (H) x 8.1" (W)x 18.3" (D)
    • 45.8 (H) x 20.5 (W) x 46.5cm (D)
  • Weight:
    • Net: 15.9lbs (7.2kg)
    • Gross: 18.7lbs (8.5kg)

Learn more about the Antec Three Hundred Illusion


Three Hundred Illusion


ATX Mid Tower
Case Material
With Power Supply
Power Supply Mounted
Motherboard Compatibility
With Side Panel Window


External 5.25" Drive Bays
Internal 3.5" Drive Bays
Expansion Slots

Front Ports

Front Ports
USB 2.0 / Audio

Cooling System

80mm Fans
120mm Fans
2 front 120 x 25 mm TriCool Blue LED Fan with 3-speed switch control

1 rear 120 x 25 mm TriCool Fan with 3-speed switch control
140mm Fans
1 top 140 x 25 mm Twocool Blue LED Fan with 2-speed switch control

Physical Spec

18.30" x 8.10" x 18.00"
15.9 lbs.


Washable air filters
Perforated front bezel for maximum air intake
Top mounted I/O ports for easy access

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 Three Hundred Illusion

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  • Danny L.
  • 4/12/2014 11:19:27 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsDecent Case

Pros: * Low DB fans included
* Well ventilated

Cons: * Quite small case in terms of videocard widith. (10.5 max and might require some angling to make it pass the HDD cage.
* Dust will definitely be a concern with a case like this. Make sure to perform regular maintenance to avoid dust build ups.

Other Thoughts: If you aren't wanting to spend time to find a 'great' case, this is a decent low cost option that won't have you build up heat within the case.

If you are the type of person that likes to look at reviews and are looking to build 'the' gaming rig, save some extra cash and start looking at high performance case. This is pretty standard in terms of features, so don't be hasty or you'll find yourself shopping for another case if you ever want to get a serious rig.

Did you find this review helpful? Yes No

  • Jeremy F.
  • 3/29/2014 1:47:37 PM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsGreat Chasis, Great Price.

Pros: The fact that it comes with four pre-installed fans is nice.
Just make sure your board has the controllers for them; if you don't feel like buying a front adapter.

The fans have three settings: Low, Medium, and High.
I chose medium.
To my surprise they actually are very quiet. (I may put on high if I O.C.)
I expected to hear whirring gust of winds.
Did I mention she runs very cool at stock settings?
For the price and the inclusions, this is a must have for the experienced builder. For someone whos fairly new; read below.

Cons: Space.
(And not the final frontier sort either!)
This case will house ATX.
This case however will not house Windforce cards or anything over 10.5".
I literally bought a pair of tin snips and went to town just to get my GPU to fit in the chasis.

The space really isn't enough. with no place to hide cables and little to no room for large video cards; this is not the best option for someone who wants space.

Other Thoughts: Its not a bad case for the money.
I fit a Hyper cooler 212 Evo CPU cooler, and NON-Modular PSU, and a 12" GPU in there.
Yes I cut, and zipped tied wires out of the way of fans.
Yes its very cramped at the bottom.
And yes, I still have more than adequate airflow.
Just make sure you have AT LEAST one of the following:
GPU smaller than 10"
Modular PSU

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

  • Cheryl W.
  • 3/24/2014 5:10:42 PM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

4 out of 5 eggsAmazing Case

Pros: Very nice Mid Tower Case. Perfect for a average good quality desktop computer.

Has a beautiful finish, and is very sturdy.

Cons: A small clip for the dust filter broke off a little too easily, but that doesn't really hurt the entire case.

Not a whole lot of space for cable management, but enough room to get the job done.

Other Thoughts: It's a great case, comes with more fans than I needed(Motherboard had 4 fan connecters, one is being used for CPU)

Overall, I'd buy this case again, if I wanted.

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  • Charles C.
  • 3/22/2014 5:48:00 AM
  • Tech Level: Somewhat High
  • Ownership: less than 1 day
  • Verified Owner

4 out of 5 eggsAlmost Awesome

Pros: Great Case with plenty of HDD spots
Comes with 4 fans

Cons: 2 of the fans either don't have LED lights or don't light up...
Graphics card blocks two of the HDD spots but there are enough that this isnt too big of a problem...

Other Thoughts: Not worth returning the case over the LED light but mildly infuriating and space I knew going in as my other tower was a full but it was a pain to bring to LANs so overall happy but still 4 stars because of fans not all lighting up like they do in the picture...

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  • Andrew M.
  • 3/20/2014 10:34:28 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsOld Familiar

Pros: Antec build quality. Simple, yet efficient to build with. Great airflow.

Cons: It's beginning to look its age. Yet so am I. What's up with the 30+ thumb screws rattling around in the case?

Other Thoughts: I used this case alot in 2009 for some builds and I needed a case for a simple home lab. With the discount, it was a no brainer to get this and working on the case was easy. The weird thing was when I received the packing box, it was rattling hard. I thought something was wrong with the chassis. I opened up the case expecting a chunk of something to fall out but instead I got about 30+ thumb screws along with the regular bag of screws and standoffs. The thumbscrews were just loose in the case and it took me a while to inspect every corner to get them all out. Very bizarre.

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  • Allen G.
  • 3/20/2014 8:26:25 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsbudget friendly great case!

Pros: this is my 3rd antec computer case product,I really like their design and layouts.most attractive about this product is economically friendly.not modular,but for the purpose I have in mind modular was not what I was looking for.I do like the way the access panels swing open makes it different than other cases.rounded edges on the mobo mounting plate for wire routing/cable management.No sharp edges either.

Cons: some things on this product to me didn't sit well with me these are 1,the side mounted port for your choice to fill it with a 120mm fan or not,maybe for some people that aren't running a v-card that doesn't need a fan nearby to help cool it if you include a block off plate of some kind? My only other issue is there is fan speed selector switches,which is great BUT there is no way to externally mount/recess mount or move them where you like to IMO out of the way or easy adjustment without removing the access panel/s and doing so.

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  • Timothy C.
  • 3/1/2014 7:21:20 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsExcellent case

Pros: Plenty of room to work. Solid construction. Multiple speed settings on fans. Blue LEDs look cool.

Cons: I've only had my build finished for a couple of days, so no cons yet.

Other Thoughts: I bought this for my first build, and it has done everything I've needed it to. I'm very pleased with it and would recommend it in a heartbeat.

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  • Se-Jeong L.
  • 2/25/2014 12:00:08 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsWhat a deal

Pros: I believe I paid $49.99 after rebates. The Antec Three Hundred will forever be one of the top budget computer cases. My previous gaming computer was based on this case. All spots for fans were used. Provides great air flow and very sturdy.

Cons: The case came with three fans instead of 6

Other Thoughts: There is now a USB 3.0 version which I recommend if anyone wants to buy this case.

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

  • Sandy L.
  • 2/24/2014 10:10:10 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

2 out of 5 eggsNot a good case at all...

Pros: Solid build quality, metal grills, fits a ASUS GTX 770.

Cons: Poor cable management, terrible noisy fans, power supply faces inwards fighting GPU for air.

Other Thoughts: This case looks great on paper but in reality it is sub-par.
Not recommended.

Did you find this review helpful? Yes No

  • Kevin L.
  • 2/22/2014 8:52:11 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsFans

Pros: Solid construction, clean design, no frills, doesn't look like space junk

Cons: Fans

Other Thoughts: Built a machine with this case in 2009 (using now as second/HTPC). Was pleasantly surprised that it is still available and as far as I can tell largely unchanged. Fans tho were changed, connectors for one are the smaller motherboard style connector (had to dig up an adapter to larger molex style as Z87-A has 3 case fan outs only). Rear fan sounded awful (grindy) so I swapped it out for a Scythe fan I had lying around. Top fan feels like it is dying, makes a little whirring on start but then runs quiet.

MSI GTX760 fits in there just fine and Zalman CNPS10X also.

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Item#: N82E16811129066
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