depends on how you define 'pc' also it gets away with by using a FlexATX PSU which, iirc aren't the easiest to come by... the likes of the Lazer3d and dan a4 are ~7l mostly because of the larger psu.
That's an impressive design, whining PSU or no... As a fan of SFF kit, I've been watching all sorts of small cases and builds and I thought the 6 litre MI-6 from CCD was the imit for getting a fully specced PC with GPU, seems not. The Velka 3 is absolutely incredible for the detail in its design and execution. Having to squash it to make everything fit made me wince a bit! 4 litres is super hard core, congrats to Michael at Velkase for creating it and its 'huge' a7 litre sibling.
I think that true SFF will become more compelling when I can get 2-4tb of M.2 storage for a reasonable price and won't even need 2.5" mount.
