I think that, when Raptor were demoing the blackbird at OpenPOWER Summit EU 2018, they were using a Lian-Li PC-05 case w/ the 2U HSF. You'd want to check with t

I think that, when Raptor were demoing the blackbird at OpenPOWER Summit EU 2018, they were using a Lian-Li PC-05 case w/ the 2U HSF. You'd want to check with their sales/support for recommendations though. Edit: It was a Lian-Li PC-06SX and not an 05!