[en] The intrinsic potential of D-³He as a reactor fuel is investigated for a large range of 3He to D density ratios. We employ a steady-state zero-dimensional reactor model in which much care is attributed to a proper treatment of fast fusion products. Useful ranges of reactor parameters as well as temperature-density windows for driven and ignited operation are identified. Various figures of merit are calculated, such as power densities, net power production, neutron production, tritium load and radiative power. These results allow us to draw several optimistic conclusions about the performance of D-³He as a reactor fuel. 11 refs., 5 figs