Enclosure Rosewill SRM-01 - Smallest Production mATX Case?

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The case for the Rosewill SRM-01 case is that this is a budget-oriented mATX case that comes in at svelte 20L and can often be had for just $20 shipped from Amazon with Prime. Is this the smallest mATX case that supports full-height graphics cards and is commercially available?

 

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I'll just leave this here: https://www.inwin-style.com/en/computer-chassis/bk-series/APAC *cough* 7.5L smaller! *couch*

 

[danger]

Wow, that is a really tiny mATX case! It has some quirks like no case fans and that optical drive cage, but still very cool. Are there any others?

 

[confusis]

The SFFn minecraft server runs in a BK In-Win case, it's been solid and temps aren't too bad