A while ago we reviewed Antec ISK300-65, which proved to be a nice mini ITX case. This other case, however, comes with an external power supply, with a  DC-DC converter module inside the case to convert the 19 V provided by the external power supply into the voltages required by the PC (+12 V, +5 V, +3.3 V, etc). On the new ISK300-150, Antec added an internal 150 W power supply, which allows you to install a more powerful system. Let’s see if this new version is as good as the previous version.

In Figure 1, you can see the comparison between the ISK300-150 box with a standard mid-tower case box, while in Figure 2 you can see ISK300-150 compared to a mid-tower case. The difference in size is dramatic, making ISK300-150 a possible choice if you want to build the smallest computer in town.

Antec ISK300-150 caseFigure 1: Comparing ISK300-150 to a standard mid-tower case.

Antec ISK300-150 caseFigure 2: Comparing ISK300-150 to a standard mid-tower case.

ISK 300-150 has exactly the same size as ISK 300-65: 3 ¾” x 8 ¾” x 12 29/32” (9.6 cm x 22.2 cm x 32.8 cm). But since it has an internal power supply, it is 1 lbs (400 g) heavier than its little brother, moving from 7.5 lbs (3.4 kg) to 8.5 lbs (3.8 kg).

On Figures 3 and 4 you have an overall look from Antec ISK300-150.

Antec ISK300-150 caseFigure 3: Antec ISK300-150 case.

Antec ISK300-150 caseFigure 4: Antec ISK300-150 case.

Here we could spot a major difference between ISK300-150 and ISK300-65: the new version has left panel meshed using the same pattern as the one used  on the right panel, while on ISK300-65 this panel is solid and only the right panel is meshed. Both have a mesh on the top panel above the area where a slim expansion card can be installed. Like ISK300-65, a triple-speed 80 mm fan is present on the right panel and there is a space for installing a second 80 mm fan there. We will talk more about cooling options later.


Gabriel Torres is a Brazilian best-selling ICT expert, with 24 books published. He started his online career in 1996, when he launched Clube do Hardware, which is one of the oldest and largest websites about technology in Brazil. He created Hardware Secrets in 1999 to expand his knowledge outside his home country.