https://www.techpowerup.com/327576/silverstone-launches-the-alta-d1-modular-workstation-chassis
 
Silverstone on Thursday launched the ALTA D1, a highly modular chassis meant for workstations, high-end desktops (HEDTs), and even SMB servers. This case was a star attraction at the 2024 Computex booth, and we covered it. The case is meant to be oriented as a full-tower, with several modular internal components that let you use the case in different ways. Don't want two PSUs? Replace the second PSU bay with a pair of 5.25-inch drive bays. Don't have a lot of add-on cards? Put that space to use for cooling or storage. There is a plethora of configurations possible with the various included components, cages, and bays.

The case's basic internal structure is horizontally partitioned, with the lower half containing the motherboard tray. There's room for an SSI-EEB (12-inch x 13-inch), or a larger specialized form-factor that's up to 15.12-inch x 13.2-inch. There's a total of 11 expansion slots, with almost 1.5x add-on card height clearance, so you can use the most bulky graphics cards or AI GPU cards with their 12V-2x6 connections sticking out from the top. You can even mount server-grade high airflow ventilation. The case includes a pair of 180 mm intake fans, and a 140 mm rear exhaust. There is a third 140 mm intake fan for the upper compartment. The upper compartment has a pair of rear-ended bays for either redundant-PSU, or single PSU, with the other bay holding a pair of 5.25-inch drives. Toward the front are a set of drive cages that can be arranged along the length of the case. You can even have a third PSU toward the lower half of the front-end. Available now, the case is priced at $799.99. You can add wheels to it for another $20.
 
A great looking workstation chassis.