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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 Q.
  • 10/20/2014 11:31:15 AM
  • Tech Level: Average
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsMy best case so far

Pros: All the fans are included. Lots of space to put your videocard and other component. Love this case I have put 2 computer in there so far and probably won't change it until standars change.

Cons: Still quite a lot of noise from the fans its not anybody's fault fans make noise whatever case you put them in.

Other Thoughts: Would have loved a better way to clean the frons dust screen whitout removing the whole front pannel like a pull tab or somthing of the sort.

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  • Hayden R.
  • 9/21/2014 6:57:42 AM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsExcellent case for the money

Pros: This case is the right size for a beginner. It looks nice and everything fits nice. the fans are awesome I didn't have to buy any after market fan, and it just worked out great for everything.

Cons: None

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  • Jeremy R.
  • 9/14/2014 1:39:23 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsGreat Case and Excellent Service.

Pros: Tasteful aesthetics, lots of airflow with the 4 included fans, plenty of room inside for lots of drives and full size graphics cards. It is also very durable, I have owned this case since 2011 and it has held up very well, much more so than the similarly priced Cooler Master case I had before this one that looks like a post apocalyptic movie prop nowadays. Antec also has top notch customer service!

Cons: No cut outs for cable management and full size graphics cards will block a HDD slot. Both of these problems have been addressed in the new Three Hundred Two case though. The only other con would be that this and even the new version of the case still has the older style silver interior instead of the more common black nowadays.

Other Thoughts: After about 2 and a half years the headphone jack on the front would only play through the right side. After checking on the Antec site from time to time for six months, the replacement I/O panel was never in stock. I finally decided to file a ticket to ask if they were going to restock it or offer the one from the new version for sale. Even though my warranty had expired by a few days they went ahead and sent me a new I/O panel for free without me even suggesting that they should as I was willing to buy one if they were to ever restock it. This has definitely made an impact on who I buy cases from in the future!

3 out of 3 people found this review helpful. Did you? Yes No

  • Matthew F.
  • 9/12/2014 7:42:34 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsLove it

Pros: I've built 6 systems now with this case. Great value and easy to work inside.

Cons: None

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  • Anonymous
  • 8/7/2014 6:41:19 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsGood cheap case

Pros: This case is everything I expected. Nothing special, and cheap.

Cons: The top 200mm fan came broken. But that does not concern me as I am replacing all of the fans anyway to get rid of the LEDs. If you're looking for a case with good cable management, this is not the case you're looking for. There is some room for cable management but not much.

Other Thoughts: If you're looking for a cheap case that isn't anything flashy, this is great.

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

  • Eduardo B.
  • 8/5/2014 4:53:39 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsBasic yet elegant.

Pros: Got it with a rebate recently, so the price was just fine for what it is. It's spacious enough for a mid-range+ build. It comes with 4 fans, 2 on the front to cool the hard drive bays and 1 @ the back of the case, followed by a larger fan on the top of the case. They have speed switches from Low-Med-High for the exception of one of the top case fan having only Low and High setting. The case looks nice and not overly exaggerated nor does it look to plain. It's just right in my opinion, and is well suited for a home or office setting. I forgot to mention the fans are blue LED illuminated, for the exception of the rear exhaust fan. The case comes with a few motherboard standoff screws already attached as well as a bag with assorted screws for HDD, Mobo and Optical drive mounting and some extra standoffs. There is a second set of screws which are twist on's apparently useful for mounting the hard drives without the need of a screw driver. Pretty handy, just wished they fit the holes for the optical drive as well. The front cover of the case is easily removable with little and careful effort, and has a filtering mesh to keep some dust and lint out of the case. The power button placement is OK on the top right, and has the reset button slightly concealed from what I believe is to prevent accidental pressing. On low settings, the fans are pretty quiet, you can only hear the CPU fan spinning up or down, if you move em to medium, they are still fairly quiet, and lastly at high level they are noticeable. I also like the convenient placement of the USB front panel ports and the headphone out / mic-in plugs.

Cons: Upon opening the case it seemed to be a little dirty. It's not entirely a cont but I can't remember the last time I bought a case that seemed like as if it was left outside to get slightly spattered. The front panel USB ports may interfere with the ability for you to put in or remove optical discs depending on what you have plugged in there. Only solution would be to relocate the optical drive to the 3rd opening down to mitigate the issue.
Although I didn't plan to use a tower CPU cooler on this build, I can see how it would make things very cramped with the sizeof the case. Run some dimension simulations by drawing out specifications and you should be fine, and will avoid you some head aches.

Other Thoughts: I never really liked overly flashy or "nerdy" type computer cases. I prefer a more elegant streamline design, and though this build is not for me, but a client, it is easy on the eyes whilst still having a subtle appreciation to detail. It is suited for small office and home usage. It is relatively light compared to my own mid-tower case from Cooler Master. If it were up to me I would ditch the LED's on the fans, because they aren't explicitly necessary, but I guess it looks good enough, specially in a dark room.

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  • Alden B.
  • 7/30/2014 3:28:20 AM
  • Tech Level: Average
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsAntec 300 case

Pros: Excellent case. Runs cool and very quiet. Plenty of room.

Cons: None found.

Did you find this review helpful? Yes No

  • Weston L.
  • 7/26/2014 9:03:47 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsAmazing pretty case.

Pros: Very great sleek look to it and the blue fan lights by default are not too overpowering to look at even in the dark. Spacious and easy to work with.

Cons: None at all, this is a great case for anyone starting to build computers or something who has been doing this for years.

Other Thoughts: Worth every dollar.

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

  • Doris B.
  • 7/6/2014 1:23:57 AM
  • Tech Level: High
  • Ownership: more than 1 year

4 out of 5 eggsI have used it for 5 years

Pros: Sturdy has the front intake filter to keep dust out, Has plenty of fans to keep your expensive parts cool and safe.

Cons: Very bad cable management, No matter how creative you are it's going to look sloppy inside. So it's a good thing it has no side window.

Other Thoughts: There might be better mid towers but this one has housed 2 i5 gaming systems. And kept them good and cool.

Now she houses a i5 3470, 8GB G.Skill Ripjaws 1600, R9 270 3 HDD's And my Asus Optical. Corsair CX600

Did you find this review helpful? Yes No

  • RICKY W.
  • 6/28/2014 3:49:23 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

2 out of 5 eggs

Pros: Looks nice

Cons: Front panel power connections are not long enough to reach my Asus Z97-A. In other brand cases I have used for builds the front I/O cables were all just right . Do not use if your MoBo has its front panel connections on the lower end. Now I am searching for another case. GOODBY ANTEC!!!

0 out of 3 people found this review helpful. Did you? Yes No

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Item#: N82E16811129066
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