Although our system did fit inside S21, it’s important for us to document the clearance options within the case to identify any limitations.
Installed within S21 is Noctua’s NH-U12P which is 158mm in height, this is the absolute maximum this case can accommodate. Any bigger and the top of the cooler will touch the side panel.
S21 can accommodate CPU coolers up to 158mm in height.
On the graphics card front, there is approximately 12 inches of total clearance – pictured is XFX 7970 DD which is 10.5 inches in length. It’s important to take into account that HDDs will cause interference if they are opposite the card.
High-end graphics cards are supported
Cable management isn’t a particular strength for S21, the clearance between the back of the motherboard tray and side panel is under 1cm.
Clearance behind motherboard tray is under 1cm
