[en] The authors discuss the results of a global fit to precision data in supersymmetric models. They consider both gravity- and gauge-mediated models. As the superpartner spectrum becomes light, the global fit to the data typically results in larger values of χ². They indicate the regions of parameter space which are excluded by the data. The authors discuss the additional effect of the B(B → X_sγ) measurement. The analysis excludes chargino masses below M_Z in the simplest gauge-mediated model with μ > 0, with stronger constraints for larger values of tan β