The Antec Three Hundred conforms to the ATX form factor and so can accommodate motherboards with form factors ATX, Micro-ATX and Mini-ITX.
It is made of Steel and its dimensions (LxWxH) are 465mm x 205mm x 458mm.
|Form Factor||ATX||Top Fans||1|
|Motherboard Form Factors||Top Fans Size||120mm|
|Color||Black||Side Fans Size||120mm|
|Expansion Slots||7||Rear Fans||1|
|5.25″ Drive Bays||3||Rear Fans Size||120mm|
|3.5″ Drive Bays||6||HDD Fans||1|
|2.5" Drive Bays||0||HDD Fans Size||120mm|
|Tool-less Rails||no||IO Display Panel||yes|
|Length||465mm||Front USB 2.0 Slots||0|
|Width||205mm||Front USB 3.0 Slots||2|
|Front Fans||1||Audio IO||yes|
|Front Fans Size||120mm|
The Antec Three Hundred has a the ATX form factor. ATX is the most ubiquitous of case standards, providing the largest array of compatible hardware on the market. Using the ATX standard, the case can house motherboards and power supplies with form factors ATX, Micro-ATX and Mini-ITX. The dimensions of the case itself (LxWxH) are 465mm x 205mm x 458mm.
The Antec Three Hundred has seven expansion slots, so there is plenty of room for extra components, which may be a deciding factor when planning on the longevity and build type of a PC system. The case has three 5.25" drive bays, which is enough to house an optical drive and a couple of hard drives, while still having space for plenty more HDDs with the six 3.5" drive bays that are also available. There are no 2.5" drive bays, though, so any SSD or laptop-sized HDD installation would require an adapter.
Made primarily of Steel, the Antec Three Hundred is built to be strong and well-ventilated. Steel cases are generally fairly cheap and sturdy, but also tend to be quite heavy. Whatever your case's material, it is important to keep a consistent airflow so that heat doesn't build up inside. It is therefore advised that you make use of the available built-in case fans and fan installation sections.