I’ve been using fans bigger than 80mm in desktop machines for a long time. Is there a reason to prefer 2U1N over the equally dense 4U2N shape? Obviously 2U is

I’ve been using fans bigger than 80mm in desktop machines for a long time. Is there a reason to prefer 2U1N over the equally dense 4U2N shape? Obviously 2U is widely available and 4U dual node is exotic, but I imagine that Cloudflare has plenty of scale for a custom form factor if it would benefit them.