A server system includes a plurality of stacked modular computing structures. Each modular computing structure includes a circuit board comprising a computing resource, an air-fluid heat exchange structure comprising a first set of pipe segments, and a cold plate structure attached to a second set of pipe segments of the modular computing structure. The first set of pipe segments of each modular computing structure interfaces with the first set of pipe segments of at least one adjacent modular computing structure to form a corresponding section of a first fluid circulation loop. The second set of pipe segments of each modular computing structure interfaces with the second set of pipe segments of at least one adjacent modular computing structure to form a corresponding section of a second fluid circulation loop.