Systems and methods for cooling a datacenter are disclosed. In at least one embodiment, a refrigerant-to-refrigerant heat exchanger (R2RHX) interfaces between a first refrigerant cooling loop and a second refrigerant cooling loop to enable transfer of heat from a cold plate of a first refrigerant cooling loop to a second refrigerant cooling loop using a first condenser unit, and so that a second refrigerant cooling loop enables dissipation of heat to an ambient environment from a second condenser unit.