I've seen comparisons to the Phanteks shift here but I see it's also a sensible downsize from the SilverStone FT03 which is one of the first tower cases I've seen with this vertical orientation.
The FT03 fit Micro-ATX boards, but it was also much bigger at 32.5 liters in volume. And people who watercooled in that case usually "backpacked" the radiator outside, which didn't always look that nice. The Mach One is an amazing step forward for watercooling in so many ways. Having a rear 5.25" bay for bay reservoirs is pretty interesting.
The FT03 fit Micro-ATX boards, but it was also much bigger at 32.5 liters in volume. And people who watercooled in that case usually "backpacked" the radiator outside, which didn't always look that nice. The Mach One is an amazing step forward for watercooling in so many ways. Having a rear 5.25" bay for bay reservoirs is pretty interesting.