It’s really not (well, no more than PCIE) - SXM has nvlink integrated, and more power delivery built in. Thus, they can crank the max wattage way higher, though it definitely gets into the diminishing return zone quickly past 300W.
SXM baseboards are made by more than Nvidia, Dell, HP, and Supermicro all have their own designs.
(Disclaimer - I work for MS Azure but have no internal knowledge about the costs/designs/capex whatever of these systems)
SXM baseboards are made by more than Nvidia, Dell, HP, and Supermicro all have their own designs.
(Disclaimer - I work for MS Azure but have no internal knowledge about the costs/designs/capex whatever of these systems)