Questions? Feedback? powered by Olark live chat software
Live Search
  Search in Midi Tower only
Prices switch to exc. VAT VAT
Subscribe to our Super Special mailing list
Find out about Counter Collect
Aria are an Intel Gold Technology Provider
Buy Now, Pay Later with Aria and V12 Finance!

Antec 300 Three Hundred Gaming Midi Tower Case - Black

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

Free Delivery!
Free Delivery

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.
Remind me by Mail - Your email address:


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  ASUS Maximus IV Extreme-Z by Will_it_fit

Will an ASUS Maximus IV Extreme-Z board fit in this case?

A friend says it will but I doubt it... anyone know for sure?

Answer by stewartz on Monday, September 5, 2011
That motherboard is an E-ATX and this case supports upto ATX form factor only so I would have to say no.

Question  USB 3.0 by George

How would you use USB 3.0 with this case? My MoBo has 4 x USB 3.0 slots. Will i need to buy a specific case for that?


Answer by daniele on Wednesday, August 31, 2011
No, your onboard USB3.0 ports should still be accessible via the rear IO panel or PCI expansion slot

Question  Question by steve kay5762

would this take a conroe945 motherboard

Answer by stewartz on Saturday, August 13, 2011
That board is an ATX Form Factor board, which this case supports.

Question  Fans by Adam

How many fans come supllied with this case? If it's all of the bays, what fans would you recommend for filling them?

Answer by jorged on Wednesday, June 29, 2011
comes with 1 rear 120 x 25 mm TriCool™ Fan with 3-speed switch control
and 1 top special 140 x 25 mm TriCool™ Fan with 3-speed switch control

Optional 2 front 120 mm fans to cool the hard drives,
side 120 x 25 mm Fan to cool graphic cards

Question  Fit a 6970? by Curious

Thinking of going for a sandy bridge build with an ATX motherboard. I would like to whether an AMD 6970 would fit in the case without it hitting the hard drive bays?


Answer by jorged on Friday, April 29, 2011
Zhould be fine
« 1  2  3  4   ... 7  »