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Antec 300 Three Hundred Gaming Midi Tower Case - Black

Stock may vary from item pictured. Retail pictures do not guarantee retail products.

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This item is currently discontinued and at present, we have no replacement on order.
Quickcode: 31087  
Stock code: CSE-MID-AN-300
Cust. Rating:   Read reviews.
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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.

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.


9 Drive Bays

  • External 3 x 5.25"
  • Internal 6 x 3.5" for HDD

Cooling System

  • 1 rear 120 x 25 mm TriCool™ Fan with 3-speed switch control
  • 1 top special 140 x 25 mm TriCool™ Fan with 3-speed switch control
  • 2 front (optional) 120 mm fans to cool the hard drives
  • 1 side (Optional) 120 x 25 mm Fan to cool graphic cards
  • Washable air filters reduces dust build up in your system, which helps keep your system cooler
  • Perforated front bezel for maximum air intake

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

  • 18" (H) x 18.3" (D) x 8.1" (W)
  • 45.8 (H) x 46.5 (D) x 20.5 cm (W)


  • Net: 15.9lbs / 7.2kg
  • Gross: 18.7lbs / 8.5kg

Warranty Information:

Manufacturer antec
Warranty Type Manufacturer via Aria
Manufacturer Website
Manufacturer Email [email protected]
Warranty Period (yrs)1

Comments, Questions & Reviews:

Latest...CommentsQuestionsReviewsWrite new...

Question  Corsair H50 by Kizzi

Will this fit the Corsair H50?

Answer by philm on Sunday, April 3, 2011
Yes it will fit fine no problem.

Comment by dave

is this case suitable for 1 of your i5 2500k / asus p8p67 bundles

Response by andrewn
They should fit in here, yes.

cobra by cobra

Hi just woundering if this case will be of for this spec of pc or would you recommend one or two.

4GB Mushkin Silverline #996768 (2x2GB) DDR3 1333MHz 9-9-9-24

Gladiator X2 555 Black Edition Pre-Built Overclocked Bundle

750W Corsair TX750 V2 ATX2.3 SLI/Crossfire Compliant Power Supply #43906

Gigabyte GeForce GTX 560Ti OC 1024MB GDDR5 PCI-Express Graphics Card #43576

2x1TB Seagate Barracuda 7200.12 1TB SATA 6GB/s 32MB Cache - OEM #44143

320GB Hitachi HDT725032VLA360 3.5" SATA II Hard Drive #8864

2xSony Optical DVD Writer, AD-7260S-0B, SATA, Black, OEM #40871

Response by andrewn
This should fit fine. Cases are hard to recommend, it's very much a personal taste thing. The xigmatec midgard is another good case at roughly the same budget, quick code 38521, which I would choose over this due to a few extra features and the black-finish to the interior.

Question  mobo by dan


Will this 38608 mobo fit in this case ?


Answer by andrewn on Thursday, March 3, 2011
Yes, that should fit np.

Question  Motherboards by Jon

Hi guys,just a quickie; will a Rampage II Extreme fit in there?

Answer by jorged on Wednesday, December 22, 2010
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