When you build a machine based on an mATX board, you tend to be aiming for a compact system that can be hidden away or is at least small enough that it is unobtrusive.  Xigmatek decided to toss that style away when they designed the Gigas, quite possibly the only mATX enclosure which weighs more than 20lbs.  At 10.94" x 12.68" x 15.59" you have a lot of space to work with and will find space for a lot more drives than you might expect even with a full size GPU and 1kg+ heatsink.   This is a perfect enclosure for some of the high end mATX board for sale currently, but as TechPowerUp points out in their review there are no grommets for watercooling if you wanted to upgrade your cooling solution.

"Is it a mATX chassis? No! Is it a mid-tower case? No! What is it? It is the Xigmatek Gigas! Too big to be a compact mATX cube, but too compact to be considered a mid-tower. Will the Gigas end up being the Frankenstein of cases, or manage to impress with this new approach?"

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CASES & COOLING