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Item#: N82E16811129066

Antec Three Hundred Illusion Black Steel ATX Mid Tower Computer Case

+ $10 off w/ promo code 1126CAEBK05, ends 11/30

In stock. Limit 5 per customer.

  • 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 standardATX 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.


Three Hundred Illusion Three Hundred Illusion
Three Hundred Illusion


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 (9) Drive Bays:
  • External 3 x 5.25"
  • Internal 6 x 3.5" for HDD

Cooling System:
  • 2 Front 120 x 25mm TriCool™ Blue LED Fan with 3-speed switch control.
  • 1 Rear 120 x 25mm TriCool™ Fan with 3-speed switch control.
  • 1 Top 140 x 25mm TriCooltrade; Blue LED Fan with 3-speed switch
  • 2 Front (optional) 120mm fans to cool the hard drives
  • 1 Side (Optional) 120 x 25mm Fan to cool graphic cards

Washable air filters reduce dust build up in your system, keeping 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 (7) Expansion Slots

Top mounted I/O ports for easy access

  • 2 x USB 2.0
  • HDA & AC'97 Audio In and Out

Unit Dimensions (H x D x W):
  • 18 x 18.3 x 8.1"
  • (45.8 x 46.5 x 20.5cm)
  • Net: 15.9lbs (7.2kg)
  • Gross: 18.7lbs (8.5kg)
Three Hundred Illusion

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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  • N/A
  • 11/25/2014 3:29:28 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

3 out of 5 eggs

Pros: It is a decent cheap case
Good airflow through case

Cons: No cable management

Other Thoughts: the two 120mm fans on the front of the case need a push before they will start spinning. Very frustrating as they are the sole intake fans for the case.

Did you find this review helpful? Yes No

  • N/A
  • 11/25/2014 8:25:16 AM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

2 out of 5 eggsThe competition has caught up

Pros: Excellent case back when it was first released. Solid build quality and a fairly barebones case with good airflow.

Cons: More than half a decade later, it's still being sold for the same price as when it was released. Compared to other, newer cases in this price range:
- No cable management cutouts
- No integrated fan controller
- No side panel dust filter
- No removable HDD bays (some graphics cards are too long to fit)
- No anti-vibration HDD brackets (night and day difference in HDD noise levels)
- Included stock fans are worse than competition's
- Frontal dust filter requires you to open the case
- USB 2.0 front panel instead of 3.0
- Unpainted interior

Other Thoughts: I recently upgraded from this case. Years ago, I would've highly recommended this case. However, the competition has caught up and there are MUCH better cases for a similar price that are better in every conceivable way. I think the people who buy this simply sorted search results by 'highest rated' or 'most reviewed' without doing more research. The 2/5 star rating is relative to other products in a similar price range.

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

  • N/A
  • 11/22/2014 10:49:40 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat Case

Pros: Lots of quiet fans
Fans have different speed settings to balance coolness and quietness.
Good cable management
Good amount of space and airflow
LED fans look great

Cons: Dust filter collects a lot of dust and needs to be cleaned more often than I'd like, but I can't complain about it doing its job right.

Other Thoughts: Make sure your motherboard has 4 case fan slots... I had to plug one of mine into an extra CPU fan slot, which, while functional, is not ideal.

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

  • ostertoaster
  • 11/17/2014 5:26:48 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggs

Pros: Great case with more than enough room for my gaming build.

Cons: Not a lot of cable management options, but I just zip tied cables and called it a day.

No SSD mount standoffs. The included SSD mount on the bottom of the case has almost no clearance, meaning that the SSD power cable was bent at a bit of an angle. I just left my SSD resting loose on the bottom of the case.

Did you find this review helpful? Yes No

  • N/A
  • 11/7/2014 8:51:57 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsSimply Simple

Pros: This case is simple for the value. I mean if you are really into cable management then this case will probably not interest you but for what it was I did cable management decently. Had no problems with the fans or anything. Really worth the money for a budget build or if you just want to buy a mid size case. Also the panels come off super easy.

Cons: The only cons is the lack of space for cable management.

Did you find this review helpful? Yes No

  • cjwilliams
  • 11/6/2014 10:53:48 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsVery Pleased With Antec

Pros: Led lights, not too flashy, cable management, roomy, has lots of HDD and DVD drive mounts, good air flow

Cons: Power button feels a bit cheap as if it would break easily

Other Thoughts: I have now owned this case for about 2.5 years, and its been great so far. Although the power button feels cheap, it still works fine. This is probably the best case out there for your money. I'm very happy with it. Good Job Antec!

Did you find this review helpful? Yes No

  • The Nobody
  • 10/29/2014 1:08:36 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

3 out of 5 eggsDecent case for the price point.

Pros: - Inexpensive (for the price range and number of bays/fans)
- Good many bays, easy enough to access

Cons: - Bay mounting holes. I have four different brands of products in the 5.25" and 3.5" bays. NONE of the holes line up -just- right. The holes on the 5.25" bays are the worse offenders. I prefer to use all four screws per bay, especially when putting together a system for a friend, relative or customer (as it usually means shipping it). The 3.5" bays aren't too bad and the 5.25" bays can be done, but, slowly as to ensure you aren't crossthreading/striping the threads of the screws.

** !! -- Here is the BIG con, the one that removed two eggs. RIVETS. Guys, be EXTREMELY careful to give a tap with the head of a screwdriver to ALL rivets in this case. After assembly (placing motherboard, etc. into case) I set it upright one last time and I thought I heard a faint rattle, drop, plinko type effect in the case. But, likely, ONLY because I still had the side cover off. I looked and didn't see anything immediately. So I gave the entire case with all its contents (no mechanical drives in it yet, as it had a six 2.5" drive to one 5.25" bay backplane in it that I hadn't yet populated and then two SSD's), woops, low and behold, the mushroomed part of a rivet had fallen from BEHIND the motherboard (mind you, it is installed into the case at this point, so that was the solder side of it) and another, where it came from I do not know. So TWO mushroomed parts of rivets were just in there. After this, I disassembled and gave about a 5 lb per square inch tap on each rivet with a screwdriver to see if any others were loose and would fall off.

This could have EASILY been a catastrophe. One that I am willing to bet would have been very challenging to content/convince/prove that the CASE burnt up a $3k system, or atleast the ASRock C226 WS+ and Xeon E3-1240v3 processor.

QUALITY ASSURANCE TEAM -- You did NOT do your job adequately let alone properly this day. Will it keep me from buying Antec in the future, I do not know. I do know, I'll look to other alternatives instead of defaulting to Antec.

Other Thoughts: - Blue LED's, these can be "clipped" easily enough (the front requires taking off the faceplate, be -careful- the "clips" holding it on are a bit more brittle than I would care for)

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

  • DanQ
  • 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.

Did you find this review helpful? Yes No

  • Hayden
  • 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

Did you find this review helpful? Yes No

  • JDRising
  • 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!

4 out of 4 people found this review helpful. Did you? Yes No

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  • $79.99
  • $64.99
  • Save: $15.00 (19%)
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